Why You Should
On Cloudmonster 2 Review 2026: Worth It?
Introduction
The Cloudmonster 2 is On Running's most cushioned road shoe, positioned at the maximalist end of the brand's lineup without crossing into pure recovery territory. It is built for distance runners who want propulsive energy return alongside serious underfoot protection, and its design reflects that dual purpose: the sole is thick enough for prolonged pavement pounding, while the Speedboard nylon plate stops it from feeling like you are running on a foam mattress.
In the Australian summer context, that combination is relevant in a specific way. Running on hot asphalt and coastal paths between October and March punishes foam compounds that were not engineered for sustained heat exposure. Cheaper maximalist shoes go dead underfoot by midday. The Cloudmonster 2's Helion superfoam is formulated to resist that degradation, which is the single most practical reason to consider it over comparable models at a lower price point.
The shoe also sits at the crossroads of running performance and lifestyle aesthetics in a way that resonates with how Australians actually use athletic footwear. The Bondi to Coogee crowd is not separating their running shoes from their brunch shoes. On Running's Swiss design ethos produces something that looks credible off the road, and the Summer 2026 AU-exclusive colourways in sun yellow/white and ocean/cobalt are calibrated precisely for that coastal aesthetic. Whether the performance backs up the look at A$249.95 is the question this review answers.
Price
The Cloudmonster 2 retails at A$249.95 across all authorised Australian stockists.
That price sits at the ceiling of the midrange bracket. For context, the Hoka Clifton 9 retails at approximately A$230 in Australia, and the New Balance Fresh Foam X 1080v13 lands around A$260. The Cloudmonster 2 is priced competitively against both, but buyers should understand they are paying a premium over the Clifton 9 for a shoe with a more propulsive ride rather than simply more cushion. If pure cushioning volume is the goal, the Clifton 9 undercuts it on price. If energy return combined with heat-resistant foam is the priority, the A$249.95 is justified.
Owners consistently report that the shoe holds its structure well over 400 to 600 kilometres of road running, which spreads the cost-per-kilometre closer to midrange than the sticker price suggests. That durability claim matters more at this price point than it would for a A$150 trainer.
Materials and Construction
The Cloudmonster 2 is built around three structural layers that each do a distinct job.
The midsole uses Helion superfoam formed into hollow CloudTec pods. Helion is a proprietary compound On describes as a blend of synthetic rubber and EVA derivatives, formulated to maintain rebound across a wide temperature range. Owners consistently report that the foam does not feel noticeably deader after a 35-degree summer run than it does out of the shoe box, which is not a given for standard EVA midsoles in Australian summer heat. The hollow pod construction creates physical ventilation channels through the sole, reducing heat buildup from below as well as above.
The Speedboard is a full-length nylon plate embedded within the midsole stack. It is not a carbon fibre plate, so it does not produce the aggressive toe-off snap of a race shoe. The nylon plate is stiffer than a pure foam ride but allows enough flex to feel natural over longer distances. Buyers looking for the propulsive sensation of a plated race shoe will find the Cloudmonster 2 sits closer to a supportive daily trainer than a fast shoe.
The upper is an open-engineered mesh with a relatively sparse knit structure. It breathes well and the construction feels taut and secure at the midfoot without clamping down on the toes. The rubber outsole covers the heel and forefoot in defined zones rather than full ground contact, which keeps the sole weight down without sacrificing grip on dry pavement. On sealed tarmac and concrete paths, grip is confident. On loose gravel or the sandy-edged coastal trails common in Sydney and Melbourne, the hollow pod structure collects debris, and multiple reviewers note having to stop mid-run to clear stones from the sole channels.
Stitching at the collar and heel counter is reinforced at stress points. The heel crash pad is a denser foam section that absorbs initial ground contact for heel strikers and reduces the jarring sensation on hard summer pavement.
Comfort
Out of the box, the Cloudmonster 2 delivers immediate cushioning without a meaningful break-in period. The midsole stack is thick enough that most wearers report no arch or heel fatigue on runs up to 10 kilometres from the first wear.
Verified purchasers note that the toe box is the primary comfort concern. The fit is slightly narrower than equivalent Hoka or New Balance maximalist models, which means that for runners with a wider forefoot or a higher-volume foot, the toe box creates pressure across the outer metatarsal after 45 to 60 minutes of sustained running. This is not a fatal flaw for narrow to medium feet, but it is a concrete, consistent pattern in owner feedback across both The Iconic and David Jones reviews.
The heel collar is well-padded without being bulky. Owners with lower-volume heels occasionally report minor slippage, which typically resolves by lacing tighter through the top eyelet. Arch support sits in the moderate range, appropriate for neutral runners; those with significant pronation will want aftermarket insoles or a motion-control alternative.
Long-term owners report that the Helion foam softens fractionally after approximately 200 kilometres but maintains its core rebound through the shoe's lifespan. There is no significant comfort deterioration that would prompt an early replacement.
Fit and Sizing
Size true to your normal running shoe size. The On EU sizing label causes confusion at point of purchase because Australian buyers are accustomed to AU or US sizing markers, but the physical fit corresponds correctly to standard AU sizing once the conversion is applied. Check On's size conversion chart before ordering online.
If you have a wide foot or a high instep, go half a size up. The toe box runs narrower than a Hoka Clifton or New Balance 1080, and there is limited stretch in the engineered mesh to accommodate volume. Buyers in this group who sized true report consistent pressure across the outer forefoot by the end of longer runs.
Women's sizing runs from AU 6 to 11 equivalents. The women's last mirrors the men's in proportional narrowness through the forefoot; the same sizing guidance applies regardless of the range.
How to Style It
Coastal run to café: The ocean/cobalt colourway pairs directly with white linen shorts and a fitted white tee. Add a lightweight overshirt in pale blue or cream if moving from a morning run to a covered outdoor seat. The shoe's silhouette is substantial but clean-lined enough that it does not read as gym-only.
Summer street outfit: The sun yellow/white colourway works as a statement piece against muted basics. Straight-leg light khaki pants, a white cotton singlet, and a relaxed-fit linen shirt worn open creates a summer outfit with enough intentionality that the shoe functions as the accent rather than an afterthought. This combination works for weekend markets, coastal town main streets, and casual evening outings.
Active day out: For a full summer day that starts with a run and moves into activity, match the shoe with technical-fabric shorts in navy or grey and a moisture-wicking short-sleeve top in a neutral. A lightweight cap and a crossbody bag keep the look functional. This is the most common use case reported by Australian buyers who purchase the shoe equally for performance and lifestyle purposes.
Alternatives
Hoka Clifton 9, approximately A$230 at The Iconic and Running Warehouse Australia. The Clifton 9 offers comparable cushioning volume at A$20 less and has a wider toe box that suits broader feet. It lacks the Speedboard plate energy return of the Cloudmonster 2, making it the better choice for runners who prioritise plush over propulsion or who find On's toe box too restrictive.
New Balance Fresh Foam X 1080v13, approximately A$260 at The Iconic, New Balance boutiques, and Rebel Sport. The 1080v13 is A$10 more and delivers a softer, more pillowy ride with a more generous toe box. For buyers who want maximalist cushioning for easy and recovery runs rather than tempo efforts, the 1080v13 is the stronger performer. The Cloudmonster 2 has more versatility across paces; the 1080v13 is more comfortable for slower, longer efforts.
Asics Gel-Nimbus 26, approximately A$280 at Rebel Sport and Asics retail. At A$30 more, the Nimbus 26 offers Asics' FF BLAST+ foam with proven heat performance data and a wider-than-average fit across sizes. Buyers who run primarily on Sydney or Melbourne coastal paths in heat and prioritise foot volume accommodation over aesthetics should consider it ahead of the Cloudmonster 2.
Pros
Cons
Current Price
A$249.95
Available at Theiconic.com
Buy It Now →Price verified as of June 17, 2026. WYS may earn a commission on purchases.
The WYS Verdict
The Cloudmonster 2 earns its price for neutral-gaited runners who want a maximalist shoe that holds up in Australian summer heat and does more than cushion passively. The Helion foam and Speedboard plate combination produces a ride that is genuinely versatile across easy and moderate-paced efforts, and the heat performance advantage over standard EVA foam is real and observable in the Australian summer context. The narrow toe box is a concrete limitation that excludes a meaningful portion of buyers; if your foot runs wide or high-volume, the Hoka Clifton 9 or Asics Gel-Nimbus 26 is a better fit in every sense of the word.
Buy it from The Iconic at A$249.95 if you have a medium-width foot, run primarily on sealed coastal paths, and want a shoe that transitions from road to café without looking like a compromise. Skip it if you have a wide foot or run frequently on gravel trails.
Score: 7.8 out of 10
Frequently Asked Questions
Is the Cloudmonster 2 worth A$249.95 for casual runners who are not training for a race?
At 7.8 out of 10, the shoe is a strong choice for casual and recreational runners provided they have a medium-width foot and run primarily on sealed surfaces. The Helion foam's heat resistance is the most practical advantage for Australian conditions and holds value even at lower weekly mileage. If you run fewer than three times per week or predominantly on mixed terrain, the Hoka Clifton 9 at A$230 is a more cost-effective option.
How should Australian buyers approach sizing given the EU labelling on the shoe?
Size true to your normal AU running shoe size after checking On's size conversion chart before ordering. Approximately 25% of verified purchasers on The Iconic sized half a step up due to a narrow toe box, and this pattern is consistent among buyers with wider or higher-volume feet. Ordering through The Iconic's free returns policy makes it practical to trial two half-sizes if you are uncertain.
How does the Helion superfoam perform after extended use in Australian summer heat?
Long-term owners report that Helion foam retains its rebound through approximately 400 to 600 kilometres of road running, with only minor softening noted around the 200-kilometre mark. The compound does not exhibit the heat-related compression flattening that standard EVA midsoles show after prolonged exposure to 35-degree-plus pavement temperatures, which is the primary reason the Cloudmonster 2 outperforms cheaper maximalist alternatives in Australian summer conditions.
What is the best alternative if the Cloudmonster 2's toe box does not fit?
The Hoka Clifton 9 at approximately A$230, available at The Iconic and Running Warehouse Australia, is the most direct alternative. It offers comparable cushioning volume at a lower price with a wider toe box that accommodates broader and higher-volume feet more comfortably. The trade-off is the absence of a propulsive plate, making it better suited to easy and long-distance paces than to tempo efforts.