Why You Should
On Running Cloudmonster 2 Review 2026: Worth the Hype?
Introduction
The Cloudmonster 2 is On Running's answer to a specific runner: someone who logs 20 to 40 miles per week on road and pavement, wants joint-protecting cushion without sacrificing a snappy toe-off, and is willing to pay for it. The original Cloudmonster built a loyal following among recreational runners returning to the sport post-pandemic, but it had documented problems with heel slippage and a mesh upper that turned stuffy in warm weather. The second version fixes both, and the timing is deliberate: the Cloudmonster 2 launches into a summer running market that has fully committed to the maximalist cushion category.
The competitive space here is crowded. Brooks Ghost 16 ($140), ASICS Gel-Nimbus 26 ($160), and the Hoka Clifton 9 ($145) all compete for the same recreational runner who prioritises comfort over race-day performance. What separates the Cloudmonster 2 is the carbon-infused Speedboard plate sitting inside a maximally cushioned build, a combination more common in performance trainers priced $180 and above. Whether that combination is worth $169.99 depends entirely on what kind of runner you are and how honestly you assess your own needs.
The buyer profile matters here. Verified purchase data and reviewer patterns consistently point to runners aged 35 to 50 re-entering regular training, people managing knee or hip discomfort who need a forgiving platform, and lifestyle-adjacent buyers who want a shoe that transitions from a morning run to brunch without changing. The Cloudmonster 2 serves all three, but it serves the first two best.
Price
The Cloudmonster 2 retails at $169.99, which puts it $10 above the ASICS Gel-Nimbus 26 and $30 above the Brooks Ghost 16 while undercutting the Nike Invincible 3 ($180) and New Balance Fresh Foam X More v4 ($174.99). At this price point, the Speedboard plate is the differentiator: no shoe at $145 or below offers a carbon-infused plate inside a full maximalist cushion stack. If you run more than 25 miles per week and want a single daily trainer, $169.99 is defensible.
For runners logging under 15 miles per week or treating this primarily as a casual walking shoe, it is not. The Brooks Ghost 16 at $140 delivers comparable all-day comfort without the rocker geometry that requires a two-to-three run adjustment period, and its wide-width availability is better. The $30 premium on the Cloudmonster 2 only earns itself when the Speedboard plate is working, and that requires a consistent forward-drive running gait to activate it.
Materials and Construction
The upper is engineered mesh with a recycled polyester lining, and the construction reflects a deliberate update from the Cloudmonster 1. The enlarged ventilation zones are structural, not cosmetic: the mesh panels over the forefoot and lateral midfoot are visibly more open-weave than the original, and owners who have worn both consistently report a noticeable airflow improvement in temperatures above 80°F. The recycled polyester lining is thin enough not to add heat retention, which matters during summer humidity when synthetic linings are a common failure point.
The midsole is CloudTec Phase EVA foam with 18 cloud pods, and the pods compress sequentially through the gait cycle rather than all at once, which is what separates CloudTec Phase from standard EVA blocks. The Helion superfoam compound within the midsole is rated to maintain responsiveness above 85°F, addressing a real limitation of standard EVA foam that softens and loses return in high-heat summer pavement conditions. The Speedboard, a carbon-infused fibre plate, sits between the foam layers and adds propulsive rebound at toe-off without raising the shoe's stack height into instability territory.
The Missiongrip rubber outsole covers the forefoot and heel contact zones with a pattern designed for road and light trail. Verified purchasers report no meaningful grip degradation on boardwalks, wet pavement, or packed gravel after 150-plus miles. The heel cup has been stiffened relative to the Cloudmonster 1, which resolves the original's heel slippage complaint but introduces a minor blistering risk during the first two to three wears before the collar softens.
The shoe weighs under 10 oz in men's sizing, which is legitimately light for a maximum-cushion build. For comparison, the Hoka Clifton 9 weighs approximately 8.8 oz and the ASICS Gel-Nimbus 26 comes in around 10.9 oz, placing the Cloudmonster 2 in the middle of the category by weight.
Comfort
Out of the box, the Cloudmonster 2 lands softly underfoot with a cushion profile that reads as plush without being mushy. The sequential compression of the cloud pods means the shoe does not feel like stepping onto a static foam platform; there is perceptible movement through the gait cycle that most runners find reassuring rather than unstable on straight-line running. Owners consistently describe the first run as immediately comfortable, with no significant out-of-box stiffness in the upper or midsole.
The break-in issue is specific to the heel collar. Multiple reviewers note minor rubbing on the Achilles during the first two to three wears, particularly for runners with lower-volume heels. Wearing double-layer no-show socks or thin ankle socks for the first few runs addresses this. After the collar softens, long-term owners report no recurrence.
The wider toe box introduced in the Cloudmonster 2 is a meaningful upgrade for summer running specifically. Feet typically swell in heat, and the original's narrower forefoot became a friction point after 45 to 60 minutes of warm-weather running. The revised geometry accommodates that natural swell without the shoe feeling loose at the midfoot, where the fit remains structured.
One durability note on comfort: owners running in summer heat report that the insole compresses noticeably after approximately 200 miles, which is earlier than the outsole or midsole show wear. Replacing the stock insole at that point with a third-party option extends the shoe's functional comfort life without replacing the shoe. This is not unusual at this price point, but it is worth factoring in for runners who track mileage.
Fit and Sizing
The Cloudmonster 2 fits true to size for the majority of buyers. Size to your normal US running shoe size. The 18% of reviewers who recommend going half a size up are predominantly runners with wider forefeets, those wearing thicker cushioned running socks, or runners who experience significant foot swell after 60-plus minutes in summer heat. If any of those three conditions apply to you, size up half a size.
On Running uses standard US sizing with no notable deviation from US sizing norms, so conversion from European or UK sizes follows standard charts without adjustment. Half sizes are available from Men's US 7 through 15 and Women's US 5 through 11. Wide-width options remain limited at most retail partners despite documented demand; if you need a 2E or 4E width, the Cloudmonster 2 is not your shoe. The New Balance Fresh Foam X More v4 offers a genuine wide-width option at a similar price point and is a practical alternative for that specific need.
How to Style It
Morning run into weekend errands: Wear the Cloudmonster 2 in Cobalt/White with a 5-inch navy running short, a fitted white performance tee, and a structured baseball cap. The clean white midsole and bold upper read as intentional athleisure rather than post-gym afterthought. This combination works for farmers markets, coffee runs, and casual retail without requiring a shoe change.
Festival or outdoor event: Pair the Flame/Ivory colourway with wide-leg linen trousers in a natural ecru tone, a cropped ribbed tank in rust or burnt orange, and a crossbody bag. The Flame colourway coordinates without matching, which avoids the matchy-matchy trap. Chunky midsole silhouettes have established legitimacy at outdoor events and festivals in 2026; this colourway is particularly well-positioned for that context.
Track-to-lunch transition: Wear the Cobalt/White with biker shorts in a complementary cobalt or tonal navy, a loose-fit quarter-zip in white or off-white, and a sleek shoulder bag. Strip the quarter-zip to the tank underneath for the actual run, then re-layer for the post-run segment. The Cloudmonster 2's silhouette is substantial enough to anchor an outfit; it does not need to be hidden under wide pants to work outside the gym.
Alternatives
Brooks Ghost 16 ($140) at Running Warehouse or Brooks.com: The Ghost 16 is the right choice for runners who find rocker geometry disorienting or who need a shoe for mixed-use including light lateral movement. It offers comparable all-day cushion on a more neutral platform, wide-width availability in-store, and saves $30. It does not have a carbon plate or the Helion foam's heat-resistance claims.
ASICS Gel-Nimbus 26 ($160) at ASICS.com or Fleet Feet: The Nimbus 26 is better for runners prioritising long-distance comfort over responsive return. Its gel forefoot and rearfoot units provide a softer landing than the Cloudmonster 2's sequential pods, and it has a longer-established durability track record with verified owners reporting consistent comfort past 300 miles. The trade-off is a less propulsive toe-off and a heavier build at approximately 10.9 oz.
Hoka Clifton 9 ($145) at Hoka.com or Nordstrom: At $24.99 less, the Clifton 9 offers a comparable maximalist platform with slightly better weight efficiency at 8.8 oz. Owners who find the Cloudmonster 2's cloud pod system gimmicky or who prefer a more uniform foam feel consistently prefer the Clifton 9. It lacks the Speedboard plate, which is meaningful for runners who want active energy return rather than passive cushion.
Pros
- The Helion superfoam compound maintains responsiveness above 85°F, addressing a documented failure point of standard EVA foam in summer pavement conditions.
- The redesigned mesh upper with enlarged ventilation zones produces a noticeably cooler internal environment than the Cloudmonster 1, confirmed consistently across owner reports from warm-weather climates.
- The wider toe box accommodates natural foot swell during runs exceeding 45 minutes in heat, reducing friction in the forefoot without loosening midfoot hold.
- The Missiongrip rubber outsole maintains grip on boardwalks, wet pavement, and packed gravel through 150-plus miles based on verified purchaser reports.
- At under 10 oz, the shoe delivers maximum-cushion comfort at a weight competitive with the category midpoint, lighter than the ASICS Gel-Nimbus 26 by approximately 0.9 oz.
- The revised heel cup resolves the top complaint of the Cloudmonster 1, eliminating heel slippage for the majority of buyers after a short break-in period.
Cons
- The insole compresses noticeably after approximately 200 miles in summer heat, earlier than the outsole or midsole show wear, requiring insole replacement to maintain comfort.
- The rocker geometry requires two to three runs to adjust to and performs poorly during lateral movements, making this shoe unsuitable for court sports, tennis, or any activity requiring side-to-side stability.
- The heel collar causes minor Achilles blistering during the first two to three wears, a break-in cost not present in competing shoes at this price point such as the Brooks Ghost 16.
- Wide-width options are not meaningfully available at retail partners despite documented buyer demand, excluding a portion of the intended audience.
- At $169.99, the shoe costs $30 more than the Brooks Ghost 16 and $24.99 more than the Hoka Clifton 9 for buyers who do not use the Speedboard plate's propulsive return, which requires a consistent forward-drive gait to activate.
- The bold colorways that perform well for lifestyle and social content are the same colorways most likely to look dated in 18 months, and neutral colourway options are limited in the Summer 2026 range.
Current Price
$169.99
Available at Nordstrom.com
Buy It Now →Price verified as of June 4, 2026. WYS may earn a commission on purchases.
The WYS Verdict
The Cloudmonster 2 is a well-executed upgrade for recreational road runners who log consistent mileage and need joint-protective cushion without a dead, passive foam feel. At $169.99, the Speedboard plate and Helion foam's heat-resistance justify the premium specifically for runners covering 20-plus miles per week through summer heat; for anyone running less than that, the Brooks Ghost 16 at $140 is the more rational purchase. The insole wear timeline and heel break-in are real costs, but neither is a dealbreaker.
Score: 7.8 out of 10
Buy it if you are a road runner logging consistent summer miles who wants a single shoe that runs in the morning and functions in public the rest of the day. Skip it if you need wide widths, run primarily on courts, or cannot justify $169.99 for a shoe with a sub-200-mile insole.
Frequently Asked Questions
Is the On Running Cloudmonster 2 worth $169.99?
For runners covering 20-plus miles per week on road and pavement, yes: the Speedboard carbon plate and Helion heat-resistant foam provide tangible performance advantages that do not exist at $140 or below. For lower-mileage or primarily casual buyers, the Brooks Ghost 16 at $140 closes the gap enough to make the $30 premium hard to justify. The shoe earns a 7.8 out of 10, held back by the insole compression issue and heel break-in cost.
Does the Cloudmonster 2 fit true to size?
Size to your standard US running shoe size in the majority of cases. If you have a wider forefoot, wear thick cushioned running socks, or experience significant foot swell during runs longer than an hour in summer heat, go half a size up. On Running uses standard US sizing with no systematic deviation, so no additional conversion adjustment is needed.
How does the Helion foam perform in summer heat, and when does the insole wear out?
The Helion superfoam compound is rated to maintain responsiveness above 85°F, which standard EVA foam does not reliably do. Owners in warm-weather climates confirm the midsole does not feel significantly softer or less responsive during summer runs compared to cooler conditions. The weak point is the stock insole, which verified purchasers report compressing noticeably at approximately 200 miles under summer heat conditions; a third-party replacement insole at that mileage restores comfort without replacing the shoe.
What is the best alternative to the Cloudmonster 2?
The Hoka Clifton 9 at $145 is the most direct alternative for buyers who want maximalist cushion without the rocker learning curve or the Speedboard plate's propulsive character. It weighs 8.8 oz versus the Cloudmonster 2's sub-10 oz, offers a more uniform foam feel, and costs $24.99 less. Choose the Clifton 9 if you want passive, consistent cushion; choose the Cloudmonster 2 if you want the foam to actively return energy at toe-off.