On Cloudultra 3

On Cloudultra 3 review: what runners say

Fit

True to size in length, medium width in the forefoot. Midfoot area runs narrow due to TPU overlay: runners with a wide foot or pronounced arch may feel pressure.

Feel

Firm, responsive ride thanks to dual-density Helion HF foam and nylon-fiberglass Speedboard. Quick transitions, good energy return; not suited for those seeking soft or plush cushioning.

Durability

Minimal wear after summer testing per Believe in the Run; Mission Grip described as adequately durable. Expected mileage not quantified by sources.

Best for

Trail running on varied terrain — singletrack, gravel, rock, hard-packed — for medium to long distances up to 50K. Also suitable for daily trail training sessions. Not designed for extreme technical terrain where greater lug height is needed.

Weak points

Midsole feels firmer than the term 'plush' implies; causes fatigue on very long outings. The medial TPU strip over-stiffens the arch area, creating discomfort when walking and at slow paces. One tester reports slipping on wet asphalt, though the finding is not corroborated by other sources.

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