On Men's Cloudultra Pro

On's most performance-focused ultra distance shoe, built for athletes who race long on technical and mixed terrain. The Cloudultra Pro brings together On's most advanced foam and cushioning technology in a package designed to hold up and perform across the kind of distances where lesser shoes start to break down.

Highlights

• Dual-density Helion HF hyper foam — On's highest performance foam delivers a responsive, energetic ride that holds its cushioning properties over long miles. Doesn't pack out or go dead the way standard EVA does on extended efforts.
• CloudTec cushioning system engineered for stability — On's signature cloud pods tuned specifically for ultra distance running where stability and consistent ground feel matter more than raw cushioning. Keeps your foot tracking straight when fatigue sets in late in a race.
• Reinforced fiberglass Speedboard — A rigid propulsion plate between the midsole layers that stores and returns energy with each footstrike. Adds forward momentum without the stiff, unnatural feel of some carbon plate shoes.
• Missiongrip outsole — On's trail-specific rubber compound handles mixed terrain, wet rock, dirt, and hardpack with confidence across variable race conditions.
• Breathable quick-dry upper — Manages moisture and airflow on long efforts and recovers fast after water crossings. A practical detail on ultra distance races where wet feet for hours become a real problem.
• 275 gram weight — Competitive weight for a shoe with this level of cushioning, stability, and protection. Light enough to move fast, substantial enough to go the distance.

Best for

Competitive ultra runners and long distance trail athletes who want a high performance race shoe capable of handling technical mixed terrain across 50K to 100 mile efforts. A serious shoe for serious distances.