On Cloudmonster 2 Review 2026: Full Guide, Specs & Fit

If you’ve been searching for cloudmonster, cloudmonster 2, on cloud monster, on cloudmonster 2, cloudmonster 2.0, or on running cloudmonster in 2026, you’re looking at one of the most talked-about max-cushion trainers in the Swiss brand’s entire lineup. But which version should you actually buy, and does the Cloudmonster 2 live up to the hype or fall short compared to the newer Cloudmonster 3 that’s now on shelves? This complete review answers those questions using current 2026 data from Doctors of Running, RunRepeat, Solereview, Fleet Feet, Trail and Kale, RunToTheFinish, plus real owner feedback from Reddit, TikTok, and Slickdeals. For the wider brand story, CloudTec technology background, and how the Cloudmonster fits into the full lineup, our complete On Cloud shoes guide covers that ground. Here we’re staying focused on the practical picture: what the Cloudmonster 2 actually is, what changed from version 1, how it fits, who it’s best for, and where it genuinely delivers versus where it falls short compared to Hoka, ASICS, or Nike alternatives. By the end, you’ll know exactly whether the Cloudmonster 2 deserves your money.

What Is the On Cloudmonster 2? Full Specs and Features

The On Cloudmonster 2 is the second-generation max-cushion daily trainer from On Running, launched in early 2024 as the update to the original Cloudmonster that first put the Swiss brand on the map as a serious cushioned running shoe brand. Priced at $179.95 or roughly £170 at full retail, it weighs 10.4 oz (295g) in a men’s US 9 and 8.1 oz (230g) in a women’s US 8, according to specs verified by Doctors of Running, Solereview, and RunRepeat. Stack height sits at 35mm in the heel and 29mm in the forefoot, giving it a 6mm heel-to-toe drop. The upper is engineered mesh with a full inner sleeve, giving a premium feel that matches the price tag. Underneath, the midsole uses dual-density CloudTec technology combined with updated Helion superfoam and a stiff Nylon Speedboard plate embedded through the middle. The Speedboard acts like a subtle spring during push-off, giving smooth transitions across the wide platform. The outsole uses carbon rubber in high-wear areas for durability. One of the most important updates from the original Cloudmonster is that the vertical gap between the CloudTec pods, which previously acted as a stone-catcher and drove owners mad, has been filled in for cleaner runs and easier maintenance. On has also added an extra eyelet for a more secure lockdown across the wider platform. Colours across the range include the top-selling all-white, all-black, navy, grey, and seasonal pastel or bold accent colourways. Multiple UK retailers have discounted the Cloudmonster 2 significantly in 2026, with prices dropping to as low as $125 on Nordstrom and $118.99 for the original Cloudmonster at 30% off. Our current On Cloudmonster mens collection at oncloudduk.com has the full range in stock with fast UK delivery.

Cloudmonster 2 vs Cloudmonster 1: What Actually Changed

The differences between the Cloudmonster 2 and the original Cloudmonster matter because they affect ride, fit, and durability in noticeable ways. First, the weight went up by roughly 10% between versions. The original felt effortlessly light, and reviewers at Shuichi Running note the version 2 reminds you it’s on your foot in a way the original didn’t. Second, the fit is genuinely wider on the Cloudmonster 2. Trail and Kale’s tester recommends dropping half a size for buyers with average feet, because the roomier upper suits high-volume feet or wide-fit users better than average-width buyers. Solereview confirms the same, recommending a US 9.5 in the Cloudmonster 2 for regular US 10 owners. Third, the CloudTec pod gap on the sole was filled in, solving the stone-catcher problem that plagued the original. Fourth, the midsole cutout was ditched to bump up the stack height, giving slightly more cushioning underfoot but adding to the overall weight. Fifth, the midsole gained a new layer of compressed Helion foam on the forefoot, making landings feel softer without eliminating the firm push-off feel the brand is known for. Sixth, the extra eyelet added at the top of the lacing gives runners more control over lockdown across the widened platform. Seventh, the Cloudmonster 2 is noticeably more stable than the original, addressing the lateral roll issue the original suffered from due to its tall monstrous midsole. RunDNA’s Josh Willoughby summarises the trade-off well: increased durability at the cost of a heavier ride, which most runners find a welcome exchange. But RunRepeat calls it “a version 1.5 rather than a proper 2.0 update,” with shock absorption at 137 SA heel and 115 SA forefoot, only marginally improved from the original. Our On Cloud running shoes collection covers the full performance range including the newer Cloudmonster 3 update that fixed several of these criticisms.

On Cloudmonster 2 Sizing and Fit for Men and Women

Sizing is where most first-time Cloudmonster 2 buyers slip up, so it’s worth understanding properly. The Cloudmonster 2 fits wider than the original and wider than most other On Cloud models. This is a good thing for buyers with wide feet, high-volume feet, or anyone who uses orthotic insoles. If your feet are average width or narrow, the near-universal recommendation from reviewers is to drop half a size below your usual On Cloud size. Solereview, Trail and Kale, and Running Shoes Guru all confirm this. If your regular US size is 10, order a US 9.5 in the Cloudmonster 2 for a proper lockdown that avoids heel slip and sloppy fit through the midfoot. For men’s sizing, the Cloudmonster 2 ranges from US 7 to US 14 (UK 6.5 to UK 13, EU 40 to EU 49). The men’s version has more structural volume through the midfoot to accommodate broader male foot shapes. For women’s sizing, the Cloudmonster 2 ranges from US 5 to US 11 (UK 3 to UK 9, EU 36 to EU 43). The women’s version uses a slightly narrower heel to lock down better during activity while retaining the roomier forefoot. Coming from Nike Flyknit, drop half a size on top of the general Cloudmonster half-size rule. From ASICS, stay closer to your usual size since the general rule already accounts for the width change. From Adidas, Brooks, Hoka, Mizuno, or Saucony, follow the general half-size-down recommendation. Runners with a high arch and narrow foot should note that the wider fit can feel sloppy without proper lacing, so use the extra eyelet feature and consider a runner’s loop lacing technique to lock the heel. Measure both feet in the evening when they’re slightly swollen, and use the longer foot as your reference point. Our detailed On Cloud sizing walkthrough covers every width and length quirk across the full range.

Who the Cloudmonster 2 Is Best For in 2026

The Cloudmonster 2 sits in a specific use case, and matching it to your actual activity is where most buying decisions succeed or fail. It’s best for long easy runs, the kind of weekend long runs of 90 minutes to two-plus hours where cushioning matters more than speed. Justin Alpaugh from Running Shoes Guru, an ultrarunner and shoe expert, described it as a versatile max-cushion daily trainer that handles weekend long runs with no problem. It’s also excellent for power walking, which is why it’s overwhelmingly recommended by podiatrists and worn by nurses, teachers, and healthcare workers across the UK, US, and Europe. Running Shoes Guru described it perfectly: “walk into a hospital and every nurse or doctor has them underfoot.” The cushioning under the forefoot and heel genuinely reduces foot fatigue over 12-hour concrete shifts. For easy training miles of 15 to 30 kilometres per week, the Cloudmonster 2 is a strong daily trainer. It handles tempo runs and moderate speed work competently thanks to the firm foam and Nylon Speedboard, though it’s not ideal for pure speed sessions. RunToTheFinish describes it as comparable to the Hoka Mach 6 but heavier, functioning as a firm daily trainer that transitions to tempo runs and fast finish workouts. For marathon training, the added durability from the weight bump makes it well-suited to long training blocks. For first-time On Cloud buyers who want max cushioning without going for the newer more premium Cloudmonster 3 or Cloudmonster 3 Hyper, the Cloudmonster 2 at its discounted 2026 price of $125 to $140 offers strong value. Our On Cloudmonster womens collection has the full range in the tuned-for-women fit across all popular colourways.

Real Reviews: What Runners and Reviewers Actually Say

The honest test of any trainer is what independent reviewers say when nobody’s paying them. Across 2026 reviews from major running publications, the pattern is consistent. Doctors of Running call the Cloudmonster 2 a versatile max-cushion daily training shoe with careful improvements from the original, though not a revolutionary update. RunRepeat describes it as “a version 1.5 rather than a proper 2.0,” with shock absorption at 137 SA heel and 115 SA forefoot, only marginally improved. They flagged the minimally padded tongue as a comfort weakness, and noted that competitors like the ASICS Superblast, ASICS Nimbus 26, HOKA Clifton 9, and Nike Invincible 3 outpace it on energy return and lightness. Solereview rates it a decent shoe for long runs and easy paces but not ideal for tempo or speedwork, praising the smoother transitions from the stiff Nylon Speedboard while noting the ride isn’t particularly responsive. RunToTheFinish calls it a moderately cushioned daily trainer that maintains the long-run feel of the original. Trail and Kale praises the improved stability compared to the lateral roll of the original but calls it “medium cushioning, not maximum” contrary to marketing claims. RunDNA’s Josh Willoughby calls it a shoe most runners will welcome for its increased durability. Shuichi Running, a Japanese competitive runner with a 2:40 marathon PB, called the update minor and best suited for slower paces than the original. On Reddit and TikTok, nurse-focused threads consistently rate the Cloudmonster 2 highly for reducing foot fatigue on 12-hour shifts. Runners on r/RunningShoeGeeks describe it as a shoe that “handles long slow miles like a dream” but “isn’t the one for PR attempts.” The consensus is clear: it’s a solid daily trainer and walking shoe, not a race shoe.

Cloudmonster 2 vs Cloudmonster 2.0 vs Cloudmonster 3: Which Should You Pick?

The naming can genuinely confuse buyers, so let’s clear it up. “Cloudmonster 2” and “Cloudmonster 2.0” refer to the same second-generation shoe launched in 2024. There’s no separate “2.0” model. The Cloudmonster 3 is the newer third-generation release, launched in 2026, which Fleet Feet describes as “back to its best” after mixed feedback on the version 2. The Cloudmonster 3 is a firm, dynamic shoe with a rocker ride and triple-layer cushioning that makes every stride feel purposeful. It has a softer forefoot landing than the version 2, a slightly refined upper, and better overall responsiveness. RunRepeat’s lab data on the newer Cloudmonster 3 Hyper (a super-trainer variant using Pebax midsole from On’s race-day supershoes) shows energy return scores of 66.1% rear and 69.4% forefoot, dramatically better than the version 2. If your budget stretches to $180 or more, the Cloudmonster 3 or Cloudmonster 3 Hyper is the better buy. If you’re happy with a slightly older model at the current discount price of $125 to $140, the Cloudmonster 2 remains a solid value pick. The original Cloudmonster is also still available at some retailers, discounted to as low as $99 to $118, and remains a viable option for lifestyle wear or casual running. Our On Cloud waterproof collection covers the weatherproof editions across all Cloudmonster and Cloud versions for UK buyers dealing with mixed weather.

Who Shouldn’t Buy the On Cloudmonster 2

Being honest about who this shoe isn’t for is the fairest test of any review. If you have narrow feet, you’ll find the wider fit sloppy and unsatisfying, and the standard Cloud 5 or Cloudsurfer 2 will lock down better. If you’re a speedy runner focused on tempo work, race pace training, or 5K/10K PRs, the Cloudmonster 2 is too heavy and not responsive enough. Look at the Cloudsurfer 2 or Cloudboom Strike instead. If you overpronate significantly and need serious stability support, the Cloudflyer 5 is the pick, not the Cloudmonster 2. If you need maximum energy return for elite performance, ASICS Superblast, Nike Invincible 3, or Nike ZoomX-based shoes deliver more. If your budget is under £100, ASICS Novablast 5 or Saucony Ride 19 offer comparable comfort at a lower price. And if you want the newer technology and refined ride, skip the version 2 and go straight to the Cloudmonster 3.

The Final Recommendation

For 2026, the short-form answer is this. The Cloudmonster 2 is worth buying if you want a solid max-cushion daily trainer for long easy runs, power walking, all-day standing shifts, and mixed training miles. At its discounted 2026 price of $125 to $140, it delivers strong value for buyers who don’t need the newest technology. Buy half a size smaller than your usual On Cloud size for the correct fit. If you’re a nurse, teacher, or standing on concrete daily, this is a fantastic pick. If you’re chasing speed, race performance, or maximum energy return, look elsewhere. If you want the freshest On max-cushion technology and better responsiveness, save up and get the Cloudmonster 3 or Cloudmonster 3 Hyper instead. Whatever version you pick, get the sizing right the first time, because sizing quirks are where nearly every avoidable return starts.