On Cloudultra Pro Men's Trail Running Shoes - Professional-Grade Ultra-Trail Shoe

Ultra-trail running shoe that's athlete-approved for maximum speed and endurance. Engineered to take you further, faster across demanding mountain terrain.

Elite-Level Performance

Tried and tested at elite multi-day ultra-trail events in the Alps, the Cloudultra Pro is engineered for maximum running efficiency. Over extreme distances on mountain terrain, conserving energy proves key to maintaining pace—this shoe delivers precisely that advantage.

Endurance-Focused Construction

Endurance requires consistency. This shoe features a dual-layer midsole of Helion™ HF hyperfoam with a Speedboard® rebound system for perfectly calibrated energy return and stability. This combination keeps your pace steady through all those ups and downs across ultra-distance efforts.

Revolutionary Grip Technology

Meet On's most advanced grip—ever. The updated Missiongrip™ outsole features a new lug profile developed using FEA (Finite Element Analysis) and sports science work with athletes. The optimised lug geometry delivers unparalleled grip and traction across technical terrain.

Technical Upper Design

A quick-dry, breathable, and supportive zoned Leno weave upper maintains comfort across varied conditions. The engineered rocker maximises running efficiency, helping conserve energy over ultra-distances.

Extensively Tested

Cutting-edge technology extensively tested in laboratory and field conditions at ultra-distances. Every design element focuses on endurance and maintaining speed when it matters most.

Key Features:

- Helion™ HF hyperfoam dual midsole

- Speedboard® rebound system

- Redesigned Missiongrip™ outsole (most advanced yet)

- Optimised with FEA (Finite Element Analysis)

- Lug geometry for traction and grip

- Quick-dry, breathable zoned Leno weave upper

- Supportive upper construction

- Engineered rocker for efficiency

- Extensively tested at ultra-distances

- Athlete-approved design

Best For:

- Ultra-trail running

- Multi-day ultra events

- Technical mountain terrain

- Extreme distances (50+ miles)

- Elite endurance performance

- Alpine trail running

- Maximum running efficiency

Is the Cloudultra Pro Right for Your Ultra Running?

Designed for serious ultra-trail runners tackling extreme distances who prioritise efficiency and energy conservation. If you're competing in multi-day ultra events, running technical mountain terrain at distance, or need maximum grip on challenging surfaces, the Cloudultra Pro delivers. The dual-layer Helion™ HF hyperfoam particularly benefits runners covering 50+ miles where consistent energy return matters, whilst the advanced Missiongrip™ suits those navigating steep, technical descents and ascents. Whether you're racing ultra-trail events, training for mountain ultras, or pushing boundaries on demanding alpine routes, this shoe provides the efficiency, grip, and endurance-focused technology necessary for elite-level ultra-distance performance.