On Cloudboom Max: building consensus — a public grade is not available yet; synthesized so far from 9 reviews across 5 creators, freshest review Aug 3, 2026.
TL;DR
The clearest point of consensus is that the Cloudboom Max stands out for its stability — reviewers repeatedly called this out as a genuine strength compared to typical carbon-plated race shoes, which can feel twitchy or unforgiving. That stability comes with a trade-off, though: several reviewers found the shoe resistant to faster paces, describing it as clunky or heavy once pushed beyond a comfortable cruising speed. Taken together, these observations led many reviewers to question whether "race shoe" is really the right label at all — a number of them felt it reads more like a super trainer than a true racing tool, better suited to steady, moderate-effort running than to speed work or race-day pace changes.
Photo: OnVerdict
Score
(9 of 10 primary mentions or 12 of 30 total mentions) so far
Verdict
A grade will appear when the evidence is sufficient.
freshest review · Aug 3, 2026
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Facts & figures
(9 of 10 primary mentions or 12 of 30 total mentions) so far. The attributed reviews and editorial remain available while the grade is withheld.
Price & availability
The cheapest of 1 live retailer price. (No price-history chart — we don’t track that series yet, so we won’t draw one.)
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Live prices from 1 retailer · last checked
Consensus engine
Three editorial stages turn source reviews into a traceable buyer narrative. They do not compute the grade. The consensus engine computes the grade separately from stored mentions. Click a stage to jump to it.
Attribute each claim to the creator who made it.
11 review videos69 attributed opinionsCluster into themes; keep the timeline of opinion.
69 attributed opinions10 themesTurn grounded themes into clear, traceable prose.
10 themes7 editorial paragraphsThese stages produce the editorial narrative. No stage value is an input to score, tier, verdict or confidence — those come from the consensus engine over stored mentions.
Stage A · Extraction
Editorial pipeline receipt only. This stage does not compute score, tier, verdict, or confidence; those come from the consensus engine over stored mentions.
kofuzi believes the On Cloudboom Max did not achieve the goals it was designed for.
kofuzi does not recommend the On Cloudboom Max as an alternative to the Cloudmonster 3 Hyper Lightspeed, mentioning it more as a warning of what to avoid.
kofuzi finds major problems with the execution of the On Cloudboom Max.
kofuzi states that the On Cloudboom Max has not been a successful shoe.
kofuzi states that the On Cloudboom Max is designed for comfort, with padding throughout the heel cup and a bit more structure for runners spending more hours on the road than elites.
Believe in the Run attributes to Carl the same negative impression: they agreed the On Cloudboom Max was not a great shoe overall.
Believe in the Run previously recorded a review of the On Cloudboom Max and was incredibly disappointed with it.
After about 60 km in the shoe, the reviewer's toe is very close to the end and rubs against it, making them slightly worried on each run.
The Run Testers concludes there are better options for a 4-hour marathon runner, especially since the ASICS Metaspeed Edge is cheaper and works for both racing and training.
The Run Testers considers the Cloudboom Max competes with super trainers like the ASICS Magic Speed series, the ASICS Superblast, and especially the ASICS Metaspeed series.
The Run Testers did not have major issues and ran a half marathon distance in the shoe without problems, but would have sized up half a size if given the choice.
The Run Testers does not think the shoe is particularly bad, but considers it a very expensive shoe for a purpose that most people do not need.
The Run Testers finds the ASICS Superblast (no plate) has a better ride, a more consistent ride, can be run faster in, is smoother, and has a nicer midsole roll-through compared to the Cloudboom Max.
The Run Testers finds the Cloudboom Max is definitely more stable than most carbon-plate shoes.
The Run Testers finds the shoe firmly sits in the world of cruising at a consistent 4-hour pace and does nothing else.
The Run Testers is not sure that people running 4-hour marathons need a specifically different type of shoe.
The Run Testers is not sure the Cloudboom Max is a shoe that is needed, and given the high price tag and many other great options, not a good choice.
The Run Testers notes the shoe is more expensive than some carbon-plate shoes and definitely more expensive than many of the best super trainers.
The Run Testers observes the shoe does not feel particularly designed for going fast.
The Run Testers observes the shoe feels sturdy, with a tough midsole that does not wobble, providing stability.
The Run Testers observes the shoe has a lot of padding and a comfort-oriented design in the heel section.
The Run Testers observes the shoe is not the widest, with little space in the midfoot section, and going up half a size would likely help.
The Run Testers reports the men's size 8 weighs 283 g or 10 oz.
The Run Testers thinks most people could get a cheaper shoe that does the job just as well.
The Run Testers would pick the ASICS Metaspeed Edge (the 'Mega Blast' referenced) over the Cloudboom Max for the Loch Ness Marathon because it has more bounce, is more comfortable, feels like a comfort-focused shoe for longer distances, and is cheaper.
The Run Testers , who wears a UK size 8 (US 8.5 in this shoe), finds the Cloudboom Max runs small.
When trying to pick up the pace, the reviewer finds the shoe does not want to go faster; it does not feel designed for speed.
The Run Testers compares the feel of the shoe to super trainers like the Superblast 2 and the Mega Blast, describing it as a bigger, chunkier, more solid shoe.
The Run Testers finds the shoe is not conducive to picking up the pace beyond its stated aim; at faster paces it feels a little bit clunky and too heavy, and not nippy.
The Run Testers finds when picking up the pace to about 4:30/km it did not feel like a carbon plate race shoe and did not feel like it wanted to go faster.
The Run Testers likes the padding around the heel and the tongue, noting it is very comfortable despite not having loads of padding.
The Run Testers mentions the Superblast 2 as only slightly cheaper but offering the same benefits: stable, nice cruiser, not the fastest but amazing for a consistent pace.
The Run Testers notes it is not the lightest shoe and you can feel the weight while running; it feels like a heavier shoe.
The Run Testers observes the shoe does not really feel like a carbon plate race shoe; it feels more like a super trainer.
The Run Testers observes the shoe offers benefits not found in carbon race shoes, citing stability as a main one.
The Run Testers observes there is lots of support in the shoe; it is a very stable shoe with a quite firm midsole.
The Run Testers recommends going up half a size in this shoe due to the toe space issue.
The Run Testers reports feeling their toe touch the end of the shoe while running, as the shoe pushes the toe forward.
The Run Testers reports they were not particularly wowed by this first run, attributing that to coming at it as a carbon plate race shoe rather than a super trainer or supportive training shoe.
The Run Testers speculates the weight would impact some people if running a marathon in them, as slight weight differences can matter over the distance.
The Run Testers states the Mega Blast is probably a good shoe for a 4-hour marathon time for similar reasons (more support, solid), which is what this shoe is going for.
The Run Testers thinks if they approached it as a super trainer they would have enjoyed the run more.
The Run Testers thinks you do not need this shoe to run that time, citing many good solid shoes that cost less than £220 and give similar benefits.
The Run Testers , in UK size 8, observes there is not a lot of space before their big toe.
EDDBUD compares the On Cloudboom Max unfavorably to the Puma Deviate Nitro 3 and the Nike Zoomfly 6, which are cheaper, lighter, and more easily obtainable.
EDDBUD gives the On Cloudboom Max a 'firm no,' stating there are too many On shoes that are 'all too same-y' with 'no real hint as to why they exist' or why a buyer should choose one over another.
EDDBUD observed that the On Cloudboom Max weighed 'just under 300 g' in the sample size, calling it 'one of the heaviest shoes of this ilk that I've seen in a long time.'
EDDBUD questions why On expects people to pay £220 for a 'heavy sort of race shoe' like the Cloudboom Max.
Doctors of Running finds the fit of the On Cloudboom Max is a little bit wider, especially in the toe box.
Doctors of Running notes that fit of the On Cloudboom Max is definitely a little bit wider and very comfortable.
Doctors of Running observes a stable heel on the On Cloudboom Max when standing.
RoadTrailRun describes the On Cloud Ultra Pro's platform construction — softer Helion HF supercritical foam on top, firmer Helion HF below, an X-shaped plastic plate — as being very similar to that of the Cloudboom Max, another shoe the reviewer likes a lot.
RoadTrailRun finds that the On Cloud Ultra Pro's platform construction — a softer Helion HF supercritical foam top layer with vestigial cloud elements, a firmer Helion HF layer below, and an X-shaped plastic Speedboard — is very similar to the On Cloudboom Max, another shoe the reviewer likes a lot.
RoadTrailRun finds the On Cloud Ultra Pro very stable, similar to the Cloudboom Max.
RoadTrailRun observes that the On Cloud Ultra Pro has a decent, very decent energy return from its Helion HF foam, similar to the Cloudboom Max.
TF XC Running Shoe Reviews (TF XC) finds the Cloudboom Max feels more cushioned and more stable than the On Cloudultra Pro.
TF XC Running Shoe Reviews (TF XC) finds the Cloudboom Max midsole is really great and is probably one of his favorite midsoles in any On shoe.
TF XC Running Shoe Reviews (TF XC) finds the Cloudboom Max midsole very similar to the On Cloudultra Pro.
TF XC Running Shoe Reviews (TF XC) finds the Cloudboom Max upper is super comfortable and would be great for long runs.
TF XC Running Shoe Reviews (TF XC) finds the Cloudboom Max very comfortable, durable, and versatile.
TF XC Running Shoe Reviews (TF XC) finds the plate in the Cloudboom Max is noticeable, especially in the heel, making it feel very stable and a little firmer back there.
TF XC Running Shoe Reviews (TF XC) has enjoyed using the Cloudboom Max as a super trainer — for long runs and picking up the pace a bit.
TF XC Running Shoe Reviews (TF XC) is not sure what category to put the Cloudboom Max in — either a super shoe marathon racer or a plated super trainer.
TF XC Running Shoe Reviews (TF XC) measured the Cloudboom Max weight as 10.1 oz in a men's size 9.
TF XC Running Shoe Reviews (TF XC) observes that the Cloudboom Max has plenty of cushion around the ankle collar.
TF XC Running Shoe Reviews (TF XC) picked up the pace in the Cloudboom Max and found it was not as fast and snappy as some other racers or super trainers, but did have a nice pop off the toe and felt very comfortable.
TF XC Running Shoe Reviews (TF XC) states he was hoping the Cloudboom Max would be like a road version of the On Cloudultra Pro, and thinks it comes very close — super cushioned for long runs with a nice little pop.
TF XC Running Shoe Reviews (TF XC) states the Cloudboom Max midsole is dual-density Helion HF with Pebax on top and TPE on the bottom, same construction as the On Cloudultra Pro.
TF XC Running Shoe Reviews (TF XC) 's initial overall assessment: the Cloudboom Max is technically marketed as a racing shoe for the everyday runner, but he thinks more experienced runners can use it as a super trainer.
Every row is an attributed summary of each creator’s opinion — third person, in our words, never a verbatim quote. Raw quotes live in Reviews, below.
Stage B · Synthesis
Not disagreement — opinion evolving as reviewers log more miles and newer versions land. The coral node is the latest take.
Editorial pipeline receipt only. This stage does not compute score, tier, verdict, or confidence; those come from the consensus engine over stored mentions.
The Run Testers found the Cloudboom Max runs small in length, with toes rubbing or touching the end, and recommended sizing up half a size.
Earlier reviews
The Run Testers , in UK size 8, observes there is not a lot of space before their big toe.
The Run Testers
Later reviewsa later take
Doctors of Running notes that fit of the On Cloudboom Max is definitely a little bit wider and very comfortable.
Doctors of Running
Reviewers commonly praised the Cloudboom Max's stability, noting it as a standout benefit over typical carbon-plate race shoes.
For runners who prioritize stability in a plated shoe, the Cloudboom Max delivers a sturdy, supportive platform that multiple reviewers highlighted as its core strength.
3 creators6 opinions
The Run Testers finds the Cloudboom Max is definitely more stable than most carbon-plate shoes.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceThe Run Testers observes the shoe feels sturdy, with a tough midsole that does not wobble, providing stability.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceThe Run Testers observes the shoe offers benefits not found in carbon race shoes, citing stability as a main one.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathonersWatch sourceThe Run Testers observes there is lots of support in the shoe; it is a very stable shoe with a quite firm midsole.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathonersWatch sourceTF XC Running Shoe Reviews (TF XC) finds the plate in the Cloudboom Max is noticeable, especially in the heel, making it feel very stable and a little firmer back there.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourceDoctors of Running observes a stable heel on the On Cloudboom Max when standing.
On Cloudboom Max: First ImpressionsWatch sourceMultiple reviewers observed that the Cloudboom Max does not feel designed for speed and resists faster paces, feeling clunky or heavy when pushed beyond its cruising pace.
The Cloudboom Max is not a shoe for interval sessions, shorter races, or runners who want to pick up the pace; it is built for maintaining a consistent, moderate pace over long distances.
2 creators6 opinions
The Run Testers observes the shoe does not feel particularly designed for going fast.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceWhen trying to pick up the pace, the reviewer finds the shoe does not want to go faster; it does not feel designed for speed.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?3:34The Run Testers finds the shoe firmly sits in the world of cruising at a consistent 4-hour pace and does nothing else.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?3:34The Run Testers found the Cloudboom Max runs small in length, with toes rubbing or touching the end, and recommended sizing up half a size.
Most reviewers who ran in the shoe experienced toe-space issues and advise sizing up; one first-impression reviewer found the fit wider and comfortable, so fit may depend on foot shape.
1 creator7 opinions2 counterpoints
The Run Testers , who wears a UK size 8 (US 8.5 in this shoe), finds the Cloudboom Max runs small.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceAfter about 60 km in the shoe, the reviewer's toe is very close to the end and rubs against it, making them slightly worried on each run.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceThe Run Testers did not have major issues and ran a half marathon distance in the shoe without problems, but would have sized up half a size if given the choice.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceMultiple reviewers questioned the Cloudboom Max's value at £220/$230, arguing that cheaper alternatives offer similar or better benefits for the target audience.
At its premium price point, several reviewers felt the Cloudboom Max does not justify its cost over established super trainers and racing shoes that are cheaper and more versatile.
2 creators7 opinions
The Run Testers does not think the shoe is particularly bad, but considers it a very expensive shoe for a purpose that most people do not need.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?3:34The Run Testers thinks most people could get a cheaper shoe that does the job just as well.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?3:34The Run Testers notes the shoe is more expensive than some carbon-plate shoes and definitely more expensive than many of the best super trainers.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?6:45Reviewers commonly noted the Cloudboom Max is heavy for a race-oriented shoe, with measured weights around 283–300 g, and some felt the weight while running.
The Cloudboom Max is among the heavier shoes in its category, which may matter to runners sensitive to weight over marathon distance.
3 creators5 opinions
The Run Testers reports the men's size 8 weighs 283 g or 10 oz.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceEDDBUD observed that the On Cloudboom Max weighed 'just under 300 g' in the sample size, calling it 'one of the heaviest shoes of this ilk that I've seen in a long time.'
MIDSOLES KEEP GETTING BIGGER! - NIKE VOMERO PREMIUM & ADIDAS ADIZERO EVO PRIMEX - Yea or Nay? EDDBUD3:26The Run Testers notes it is not the lightest shoe and you can feel the weight while running; it feels like a heavier shoe.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners3:24Several reviewers expressed confusion or disagreement with the shoe's positioning as a race shoe, finding it feels more like a super trainer than a racing shoe.
The Cloudboom Max blurs the line between race shoe and super trainer; buyers may be better served approaching it as a cushioned, stable training companion rather than a race-day shoe.
2 creators6 opinions
The Run Testers is not sure that people running 4-hour marathons need a specifically different type of shoe.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceThe Run Testers observes the shoe does not really feel like a carbon plate race shoe; it feels more like a super trainer.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathonersWatch sourceThe Run Testers reports they were not particularly wowed by this first run, attributing that to coming at it as a carbon plate race shoe rather than a super trainer or supportive training shoe.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners3:24Reviewers' overall reception of the Cloudboom Max was sharply divided, with some finding major execution problems and not recommending it, while others enjoyed it as a comfortable super trainer.
The Cloudboom Max polarized reviewers; some found it a failed product with poor execution, while others considered it one of their favorite On midsoles and a versatile, comfortable trainer — suggesting the shoe's appeal depends heavily on what the buyer expects from it.
4 creators10 opinions
Believe in the Run previously recorded a review of the On Cloudboom Max and was incredibly disappointed with it.
Best Running Shoes of 2026 (So Far) for Bigger Runners4:07Believe in the Run attributes to Carl the same negative impression: they agreed the On Cloudboom Max was not a great shoe overall.
Best Running Shoes of 2026 (So Far) for Bigger Runners4:07kofuzi finds major problems with the execution of the On Cloudboom Max.
On LightSpray Cloudmonster 3 Hyper17:24Several reviewers noted the Cloudboom Max has a comfort-oriented heel design with substantial padding, consistent with its aim at longer-distance recreational runners.
The heel and ankle collar are well-padded and comfort-focused, which aligns with the shoe's intended use for runners spending long hours on the road.
3 creators5 opinions
kofuzi states that the On Cloudboom Max is designed for comfort, with padding throughout the heel cup and a bit more structure for runners spending more hours on the road than elites.
On LightSpray Cloudmonster 3 Hyper17:24The Run Testers observes the shoe has a lot of padding and a comfort-oriented design in the heel section.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceThe Run Testers likes the padding around the heel and the tongue, noting it is very comfortable despite not having loads of padding.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathonersWatch sourceThe Run Testers compared the Cloudboom Max unfavorably to ASICS super trainers, particularly the Superblast and Metaspeed Edge, citing better ride quality, comfort, and lower price.
The ASICS Superblast and Metaspeed Edge are repeatedly cited as superior alternatives at similar or lower cost, making them worth comparing before committing to the Cloudboom Max.
1 creator7 opinions
The Run Testers considers the Cloudboom Max competes with super trainers like the ASICS Magic Speed series, the ASICS Superblast, and especially the ASICS Metaspeed series.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?6:45The Run Testers would pick the ASICS Metaspeed Edge (the 'Mega Blast' referenced) over the Cloudboom Max for the Loch Ness Marathon because it has more bounce, is more comfortable, feels like a comfort-focused shoe for longer distances, and is cheaper.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?6:45The Run Testers finds the ASICS Superblast (no plate) has a better ride, a more consistent ride, can be run faster in, is smoother, and has a nicer midsole roll-through compared to the Cloudboom Max.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Two reviewers (RoadTrailRun and TF XC) independently found the Cloudboom Max's midsole construction very similar to the On Cloud Ultra Pro, describing both as sharing a dual-density Helion HF layout with a plate-like Speedboard, with TF XC considering it essentially a road version of that trail shoe.
Buyers familiar with the On Cloud Ultra Pro can expect a similar ride experience in the Cloudboom Max, but with more cushioning, a full-length plate, and a road-oriented outsole.
2 creators8 opinions
RoadTrailRun finds that the On Cloud Ultra Pro's platform construction — a softer Helion HF supercritical foam top layer with vestigial cloud elements, a firmer Helion HF layer below, and an X-shaped plastic Speedboard — is very similar to the On Cloudboom Max, another shoe the reviewer likes a lot.
Compared! Rocket X Trail, Cloudultra Pro, Cascadia Elite, Terrex Speed Ultra 2, Nike ACG Ultra Fly 29:12RoadTrailRun observes that the On Cloud Ultra Pro has a decent, very decent energy return from its Helion HF foam, similar to the Cloudboom Max.
Compared! Rocket X Trail, Cloudultra Pro, Cascadia Elite, Terrex Speed Ultra 2, Nike ACG Ultra Fly 29:12RoadTrailRun finds the On Cloud Ultra Pro very stable, similar to the Cloudboom Max.
Compared! Rocket X Trail, Cloudultra Pro, Cascadia Elite, Terrex Speed Ultra 2, Nike ACG Ultra Fly 2Stage C · Synthesis
Editorial pipeline receipt only. This stage does not compute score, tier, verdict, or confidence; those come from the consensus engine over stored mentions.
The clearest point of consensus is that the Cloudboom Max stands out for its stability — reviewers repeatedly called this out as a genuine strength compared to typical carbon-plated race shoes, which can feel twitchy or unforgiving. That stability comes with a trade-off, though: several reviewers found the shoe resistant to faster paces, describing it as clunky or heavy once pushed beyond a comfortable cruising speed. Taken together, these observations led many reviewers to question whether "race shoe" is really the right label at all — a number of them felt it reads more like a super trainer than a true racing tool, better suited to steady, moderate-effort running than to speed work or race-day pace changes.
Reviewers commonly praised the Cloudboom Max'…Several reviewers expressed confusion or disa…Multiple reviewers observed that the Cloudboo…
The Run Testers finds the Cloudboom Max is definitely more stable than most carbon-plate shoes.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceThe Run Testers observes the shoe offers benefits not found in carbon race shoes, citing stability as a main one.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathonersWatch sourceTF XC Running Shoe Reviews (TF XC) finds the plate in the Cloudboom Max is noticeable, especially in the heel, making it feel very stable and a little firmer back there.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourceDoctors of Running observes a stable heel on the On Cloudboom Max when standing.
On Cloudboom Max: First ImpressionsWatch sourceThe Run Testers reports they were not particularly wowed by this first run, attributing that to coming at it as a carbon plate race shoe rather than a super trainer or supportive training shoe.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners3:24TF XC Running Shoe Reviews (TF XC) 's initial overall assessment: the Cloudboom Max is technically marketed as a racing shoe for the everyday runner, but he thinks more experienced runners can use it as a super trainer.
On Cloudboom Max First Impressions Review & Comparisons3:34When trying to pick up the pace, the reviewer finds the shoe does not want to go faster; it does not feel designed for speed.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?3:34Consistent with that picture, reviewers measured the Cloudboom Max at a hefty 283–300 g, on the heavy side for anything marketed toward racing, and some said they could feel that weight underfoot while running. The heel design tells a similar story: multiple reviewers noted substantial, comfort-oriented padding around the heel and ankle collar, which fits a shoe aimed at long, recreational miles rather than sharp, competitive efforts.
Reviewers commonly noted the Cloudboom Max is…Several reviewers noted the Cloudboom Max has…
The Run Testers reports the men's size 8 weighs 283 g or 10 oz.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceEDDBUD observed that the On Cloudboom Max weighed 'just under 300 g' in the sample size, calling it 'one of the heaviest shoes of this ilk that I've seen in a long time.'
MIDSOLES KEEP GETTING BIGGER! - NIKE VOMERO PREMIUM & ADIDAS ADIZERO EVO PRIMEX - Yea or Nay? EDDBUD3:26The Run Testers notes it is not the lightest shoe and you can feel the weight while running; it feels like a heavier shoe.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners3:24TF XC Running Shoe Reviews (TF XC) measured the Cloudboom Max weight as 10.1 oz in a men's size 9.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourcekofuzi states that the On Cloudboom Max is designed for comfort, with padding throughout the heel cup and a bit more structure for runners spending more hours on the road than elites.
On LightSpray Cloudmonster 3 Hyper17:24The Run Testers likes the padding around the heel and the tongue, noting it is very comfortable despite not having loads of padding.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathonersWatch sourceBeyond these shared observations, reception of the shoe was sharply divided. Some reviewers described real execution problems and stopped short of recommending it, while others enjoyed it thoroughly as a comfortable, versatile super trainer and counted it among their favorite On midsoles. This isn't a minor disagreement — it suggests the shoe's appeal hinges heavily on what a buyer expects going in: as a race shoe, it seems to disappoint; as a cushioned daily trainer, it wins fans.
Reviewers' overall reception of the Cloudboom…
Believe in the Run previously recorded a review of the On Cloudboom Max and was incredibly disappointed with it.
Best Running Shoes of 2026 (So Far) for Bigger Runners4:07kofuzi finds major problems with the execution of the On Cloudboom Max.
On LightSpray Cloudmonster 3 Hyper17:24EDDBUD gives the On Cloudboom Max a 'firm no,' stating there are too many On shoes that are 'all too same-y' with 'no real hint as to why they exist' or why a buyer should choose one over another.
MIDSOLES KEEP GETTING BIGGER! - NIKE VOMERO PREMIUM & ADIDAS ADIZERO EVO PRIMEX - Yea or Nay? EDDBUD3:26TF XC Running Shoe Reviews (TF XC) has enjoyed using the Cloudboom Max as a super trainer — for long runs and picking up the pace a bit.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourceTF XC Running Shoe Reviews (TF XC) finds the Cloudboom Max very comfortable, durable, and versatile.
On Cloudboom Max First Impressions Review & Comparisons3:34Price added another point of friction. At £220/$230, several reviewers argued the Cloudboom Max struggles to justify its cost against cheaper alternatives that offer similar or better benefits. One outlet, The Run Testers, went further, unfavorably comparing it to ASICS' Superblast and Metaspeed Edge, citing better ride quality and comfort at a similar or lower price. That's a single source rather than a broad chorus, but it's a concrete data point worth weighing if you're comparing options in this price bracket.
Multiple reviewers questioned the Cloudboom M…The Run Testers compared the Cloudboom Max un…
The Run Testers does not think the shoe is particularly bad, but considers it a very expensive shoe for a purpose that most people do not need.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?3:34The Run Testers notes the shoe is more expensive than some carbon-plate shoes and definitely more expensive than many of the best super trainers.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?6:45EDDBUD questions why On expects people to pay £220 for a 'heavy sort of race shoe' like the Cloudboom Max.
MIDSOLES KEEP GETTING BIGGER! - NIKE VOMERO PREMIUM & ADIDAS ADIZERO EVO PRIMEX - Yea or Nay? EDDBUD3:26The Run Testers thinks you do not need this shoe to run that time, citing many good solid shoes that cost less than £220 and give similar benefits.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners6:24The Run Testers compares the feel of the shoe to super trainers like the Superblast 2 and the Mega Blast, describing it as a bigger, chunkier, more solid shoe.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners3:24Fit is another area with limited but notable input: The Run Testers found the shoe ran small, with toes brushing or touching the end, and recommended sizing up half a size. That's based on one detailed test rather than universal agreement — a separate first-impression review found the fit wider and comfortable — so actual fit may come down to individual foot shape as much as the shoe itself.
The Run Testers found the Cloudboom Max runs…
The Run Testers , who wears a UK size 8 (US 8.5 in this shoe), finds the Cloudboom Max runs small.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceThe Run Testers , in UK size 8, observes there is not a lot of space before their big toe.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathonersWatch sourceOn construction, two independent reviewers — RoadTrailRun and TF XC — converged on a more technical observation: the Cloudboom Max's midsole closely resembles that of the On Cloud Ultra Pro, sharing a dual-density Helion HF layout with a plate-like Speedboard. TF XC went so far as to call it essentially a road version of that trail shoe. For anyone who's tried the Cloud Ultra Pro, this gives a reasonably concrete reference point — expect a similar underfoot feel, but adapted here with more cushioning, a full-length plate, and a road-specific outsole.
Two reviewers (RoadTrailRun and TF XC) indepe…
RoadTrailRun finds that the On Cloud Ultra Pro's platform construction — a softer Helion HF supercritical foam top layer with vestigial cloud elements, a firmer Helion HF layer below, and an X-shaped plastic Speedboard — is very similar to the On Cloudboom Max, another shoe the reviewer likes a lot.
Compared! Rocket X Trail, Cloudultra Pro, Cascadia Elite, Terrex Speed Ultra 2, Nike ACG Ultra Fly 29:12TF XC Running Shoe Reviews (TF XC) finds the Cloudboom Max midsole very similar to the On Cloudultra Pro.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourceTF XC Running Shoe Reviews (TF XC) states the Cloudboom Max midsole is dual-density Helion HF with Pebax on top and TPE on the bottom, same construction as the On Cloudultra Pro.
On Cloudboom Max First Impressions Review & Comparisons3:34Put together, the picture that emerges is of a shoe built for stability and comfort over long, steady miles rather than for racing or speed sessions — a super trainer in most but name. That's a legitimate niche, and reviewers who approached it that way tended to like it. But buyers expecting a competitive race-day shoe, or hoping to use it for pace work, are more likely to echo the reviewers who found it clunky, overpriced, or simply not for them. Given the split reception and the price tag, this is a shoe worth trying on and thinking through in terms of intended use before buying, rather than assuming it will perform as a straightforward racing option.
Reviewers commonly praised the Cloudboom Max'…Multiple reviewers observed that the Cloudboo…Several reviewers expressed confusion or disa…Reviewers' overall reception of the Cloudboom…Multiple reviewers questioned the Cloudboom M…
The Run Testers finds the Cloudboom Max is definitely more stable than most carbon-plate shoes.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceThe Run Testers observes the shoe offers benefits not found in carbon race shoes, citing stability as a main one.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathonersWatch sourceTF XC Running Shoe Reviews (TF XC) finds the plate in the Cloudboom Max is noticeable, especially in the heel, making it feel very stable and a little firmer back there.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourceDoctors of Running observes a stable heel on the On Cloudboom Max when standing.
On Cloudboom Max: First ImpressionsWatch sourceWhen trying to pick up the pace, the reviewer finds the shoe does not want to go faster; it does not feel designed for speed.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?3:34The Run Testers finds when picking up the pace to about 4:30/km it did not feel like a carbon plate race shoe and did not feel like it wanted to go faster.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners3:24TF XC Running Shoe Reviews (TF XC) 's initial overall assessment: the Cloudboom Max is technically marketed as a racing shoe for the everyday runner, but he thinks more experienced runners can use it as a super trainer.
On Cloudboom Max First Impressions Review & Comparisons3:34Believe in the Run previously recorded a review of the On Cloudboom Max and was incredibly disappointed with it.
Best Running Shoes of 2026 (So Far) for Bigger Runners4:07kofuzi finds major problems with the execution of the On Cloudboom Max.
On LightSpray Cloudmonster 3 Hyper17:24EDDBUD gives the On Cloudboom Max a 'firm no,' stating there are too many On shoes that are 'all too same-y' with 'no real hint as to why they exist' or why a buyer should choose one over another.
MIDSOLES KEEP GETTING BIGGER! - NIKE VOMERO PREMIUM & ADIDAS ADIZERO EVO PRIMEX - Yea or Nay? EDDBUD3:26The Run Testers notes the shoe is more expensive than some carbon-plate shoes and definitely more expensive than many of the best super trainers.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?6:45The Run Testers thinks you do not need this shoe to run that time, citing many good solid shoes that cost less than £220 and give similar benefits.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners6:24Reviews
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The Run Testers finds when picking up the pace to about 4:30/km it did not feel like a carbon plate race shoe and did not feel like it wanted to go faster.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners3:24The Run Testers finds the shoe is not conducive to picking up the pace beyond its stated aim; at faster paces it feels a little bit clunky and too heavy, and not nippy.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners3:24TF XC Running Shoe Reviews (TF XC) picked up the pace in the Cloudboom Max and found it was not as fast and snappy as some other racers or super trainers, but did have a nice pop off the toe and felt very comfortable.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourceThe Run Testers observes the shoe is not the widest, with little space in the midfoot section, and going up half a size would likely help.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?Watch sourceThe Run Testers , in UK size 8, observes there is not a lot of space before their big toe.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathonersWatch sourceThe Run Testers reports feeling their toe touch the end of the shoe while running, as the shoe pushes the toe forward.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathonersWatch sourceThe Run Testers recommends going up half a size in this shoe due to the toe space issue.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathonersWatch sourceDoctors of Running finds the fit of the On Cloudboom Max is a little bit wider, especially in the toe box.
On Cloudboom Max: First ImpressionsWatch sourceDoctors of Running notes that fit of the On Cloudboom Max is definitely a little bit wider and very comfortable.
On Cloudboom Max: First ImpressionsWatch sourceThe Run Testers is not sure the Cloudboom Max is a shoe that is needed, and given the high price tag and many other great options, not a good choice.
EDDBUD questions why On expects people to pay £220 for a 'heavy sort of race shoe' like the Cloudboom Max.
MIDSOLES KEEP GETTING BIGGER! - NIKE VOMERO PREMIUM & ADIDAS ADIZERO EVO PRIMEX - Yea or Nay? EDDBUD3:26EDDBUD compares the On Cloudboom Max unfavorably to the Puma Deviate Nitro 3 and the Nike Zoomfly 6, which are cheaper, lighter, and more easily obtainable.
MIDSOLES KEEP GETTING BIGGER! - NIKE VOMERO PREMIUM & ADIDAS ADIZERO EVO PRIMEX - Yea or Nay? EDDBUD3:26The Run Testers thinks you do not need this shoe to run that time, citing many good solid shoes that cost less than £220 and give similar benefits.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners6:24The Run Testers speculates the weight would impact some people if running a marathon in them, as slight weight differences can matter over the distance.
TF XC Running Shoe Reviews (TF XC) measured the Cloudboom Max weight as 10.1 oz in a men's size 9.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourceThe Run Testers thinks if they approached it as a super trainer they would have enjoyed the run more.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners3:24TF XC Running Shoe Reviews (TF XC) is not sure what category to put the Cloudboom Max in — either a super shoe marathon racer or a plated super trainer.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourceTF XC Running Shoe Reviews (TF XC) 's initial overall assessment: the Cloudboom Max is technically marketed as a racing shoe for the everyday runner, but he thinks more experienced runners can use it as a super trainer.
On Cloudboom Max First Impressions Review & Comparisons3:34kofuzi believes the On Cloudboom Max did not achieve the goals it was designed for.
kofuzi states that the On Cloudboom Max has not been a successful shoe.
On LightSpray Cloudmonster 3 Hyper17:24kofuzi does not recommend the On Cloudboom Max as an alternative to the Cloudmonster 3 Hyper Lightspeed, mentioning it more as a warning of what to avoid.
On LightSpray Cloudmonster 3 Hyper17:24EDDBUD gives the On Cloudboom Max a 'firm no,' stating there are too many On shoes that are 'all too same-y' with 'no real hint as to why they exist' or why a buyer should choose one over another.
MIDSOLES KEEP GETTING BIGGER! - NIKE VOMERO PREMIUM & ADIDAS ADIZERO EVO PRIMEX - Yea or Nay? EDDBUD3:26TF XC Running Shoe Reviews (TF XC) has enjoyed using the Cloudboom Max as a super trainer — for long runs and picking up the pace a bit.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourceTF XC Running Shoe Reviews (TF XC) finds the Cloudboom Max midsole is really great and is probably one of his favorite midsoles in any On shoe.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourceTF XC Running Shoe Reviews (TF XC) finds the Cloudboom Max very comfortable, durable, and versatile.
On Cloudboom Max First Impressions Review & Comparisons3:34TF XC Running Shoe Reviews (TF XC) observes that the Cloudboom Max has plenty of cushion around the ankle collar.
TF XC Running Shoe Reviews (TF XC) finds the Cloudboom Max upper is super comfortable and would be great for long runs.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourceThe Run Testers concludes there are better options for a 4-hour marathon runner, especially since the ASICS Metaspeed Edge is cheaper and works for both racing and training.
On Cloudboom Max Review | Do 4-hour marathon runners need a special shoe?6:45The Run Testers compares the feel of the shoe to super trainers like the Superblast 2 and the Mega Blast, describing it as a bigger, chunkier, more solid shoe.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners3:24The Run Testers states the Mega Blast is probably a good shoe for a 4-hour marathon time for similar reasons (more support, solid), which is what this shoe is going for.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners3:24The Run Testers mentions the Superblast 2 as only slightly cheaper but offering the same benefits: stable, nice cruiser, not the fastest but amazing for a consistent pace.
On Cloudboom Max First Run Review | A performance shoe designed for 4-hour marathoners6:24RoadTrailRun describes the On Cloud Ultra Pro's platform construction — softer Helion HF supercritical foam on top, firmer Helion HF below, an X-shaped plastic plate — as being very similar to that of the Cloudboom Max, another shoe the reviewer likes a lot.
Compared! Rocket X Trail, Cloudultra Pro, Cascadia Elite, Terrex Speed Ultra 2, Nike ACG Ultra Fly 29:12TF XC Running Shoe Reviews (TF XC) finds the Cloudboom Max midsole very similar to the On Cloudultra Pro.
On Cloudboom Max First Impressions Review & ComparisonsWatch sourceTF XC Running Shoe Reviews (TF XC) states the Cloudboom Max midsole is dual-density Helion HF with Pebax on top and TPE on the bottom, same construction as the On Cloudultra Pro.
On Cloudboom Max First Impressions Review & Comparisons3:34TF XC Running Shoe Reviews (TF XC) finds the Cloudboom Max feels more cushioned and more stable than the On Cloudultra Pro.
On Cloudboom Max First Impressions Review & Comparisons3:34TF XC Running Shoe Reviews (TF XC) states he was hoping the Cloudboom Max would be like a road version of the On Cloudultra Pro, and thinks it comes very close — super cushioned for long runs with a nice little pop.
On Cloudboom Max First Impressions Review & Comparisons3:34
