On Running
On Cloudultra 3 Running Shoe - Women's
$189.95
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The Grivet Take
The Cloudultra 3 is On's ultra-distance trail trainer, built around CloudTec adapted for long-day comfort plus a cushioned wide platform. 35/29 stack, 6mm drop, ~9.4 oz women's, Missiongrip rubber outsole. Best for ultra-distance trail efforts, long-mile training, and runners who want On's distinctive ride for serious trail miles. Skip it for short technical scrambling; the Cloudultra is built for sustained effort, not snappy agility.
Fit & Feel snapshot
Fit
LengthHow the shoe fits compared with true-to-size expectations.
True to size
Toe box widthHow much side-to-side room the shoe has across the front of the foot.4 of 5
NarrowWide
Toe box volumeHow much vertical room the shoe has above the toes.3 of 5
LowHigh
MidfootHow snug or roomy the shoe feels through the arch and laces.3 of 5
SnugRoomy
Heel holdHow securely the back of the shoe holds the heel.4 of 5
LooseLocked
Ride
CushionHow much material sits underfoot. This is about amount of cushioning, not how soft it feels.4 of 5
MinimalMaximal
SoftnessHow soft or firm the cushioning feels underfoot.3 of 5
FirmPlush
RockerHow much the shoe's shape rolls you forward through the step.3 of 5
FlatAggressive
ResponsivenessHow much pop or energy return the shoe feels like it gives back.3 of 5
DeadBouncy
Support
Support TypeSupport Type describes how much built-in guidance the shoe has. Neutral shoes do not add support structure. Stability shoes use geometry, rails, firmer foam, or frame designs to create a more guided feel. Motion control shoes are the maximum-support category and are rare in modern running.
Neutral
Stability
Motion Control
Neutral shoe with a wider, steadier base
PlatformPlatform describes the width and shape of the shoe's base underfoot. A wider platform can feel steadier even when the shoe is neutral. This is separate from Support Type.
Wider, steadier base
How it fits
Fits true to size with a slightly more accommodating last for swelling on long efforts. Toe box runs slightly wider than typical On shoes. Midfoot is normal volume; heel hold is good. Available in Standard (B) only for women's.
How it feels
Cushion is high; CloudTec produces On's forward-rolling feel adapted for ultra-distance loading. The 6mm drop and wide platform give a stable, protective feel on uneven trail terrain. Missiongrip rubber outsole grips reliably across mixed conditions.
Quick specs
- Category
- Ultra trail
- Surface
- Smooth trail · Mixed terrain · Technical trail
- Heel stackHow much shoe sits between your foot and the ground.
- 35.0 mm
- Forefoot stack
- 29.0 mm
- DropThe difference between heel height and forefoot height, measured in millimeters.
- 6.0 mm
- Weight (women's 8)
- 9.4 oz · 266 g
- CushionHow much material sits underfoot. This is about amount of cushioning, not how soft it feels.
- 4 / 5
- Support TypeSupport Type describes how much built-in guidance the shoe has. Neutral shoes do not add support structure. Stability shoes use geometry, rails, firmer foam, or frame designs to create a more guided feel. Motion control shoes are the maximum-support category and are rare in modern running.
- Neutral
- PlatformPlatform describes the width and shape of the shoe's base underfoot. A wider platform can feel steadier even when the shoe is neutral. This is separate from Support Type.
- Wider, steadier base
- Midsole
- CloudTec
- Outsole
- Missiongrip rubber
- PlateA stiff layer, usually carbon, nylon, or TPU, built into some shoes to add structure, snap, or propulsion.
- No
- WidthsThe width options this shoe is made in. Actual availability depends on current inventory.
- B
Tech, translated
CloudTec is On's hollow-pod midsole technology, used in the Cloudultra with extra stack for ultra-distance comfort.
Missiongrip rubber is On's trail-rubber compound for grip on wet rocks, mud, and loose surfaces.
Compare it toSimilar shoes or common alternatives, with the key fit and ride differences called out.
On Cloud 5
Choose the Cloudultra 3 if you want ultra-distance trail capability with a wider platform, a 35/29 stack, and a Missiongrip rubber outsole. Choose the Cloud 5 if you want a lightweight 7.0 oz lifestyle road shoe with a low-profile 25mm stack for casual wear and short easy runs.
Compare On Cloud 5 →
Saucony Peregrine 16
Choose the Cloudultra 3 if you want more cushion on long ultra efforts with a wider stable platform and a 6mm drop. Choose the Peregrine 16 if you want Vibram Megagrip with 4mm chevron lugs and a low 4mm drop tuned for technical climbs and wet rock.
Compare Saucony Peregrine 16 →
Brooks Ghost Trail 1
Choose the Cloudultra 3 if you want ultra-distance cushion with a 35/29 stack and Missiongrip grip for technical terrain. Choose the Ghost Trail 1 if you want a lighter 8.4 oz door-to-trail crossover with DNA LOFT v2 and a TrailTack outsole for smooth doubletrack.
Compare Brooks Ghost Trail 1 →
Hoka Challenger 8
Choose the Cloudultra 3 if you want ultra-day cushion with a roomier toe box and Missiongrip rubber for mixed and technical terrain. Choose the Challenger 8 if you want Hoka's lighter door-to-trail crossover with the signature Meta-Rocker and 4mm Durabrasion lugs.
Compare Hoka Challenger 8 →
Buyer's guide
Read our trail running shoes guide
Lugs, rock plates, stack height, and fit for everything from gravel to technical singletrack.
Read the guide