by ON
Type: Running & Walking Shoe
Color -
Estimated Delivery In:

3-5 Days

The On Cloudultra Pro is purpose-built for ultra-distance trail running, designed to stay efficient, stable, and reliable deep into long efforts. Developed with elite ultra athletes, it prioritizes protection and control without drifting into overly soft or bulky territory.

Underfoot, the ride is firm and efficient, helping conserve energy over hours on trail. The platform remains composed on uneven and technical terrain, making it well suited for long races, mountainous courses, and sustained training runs where stability matters more than bounce. Compared to shorter-distance trail racers, the Cloudultra Pro offers more structure and protection for late-race fatigue and changing terrain.

This is not a maximal comfort cruiser, but it is also not a stripped-down race flat. The Cloudultra Pro sits in the performance-ultra category - built for runners tackling long distances who want a stable, responsive shoe that holds up from the first climb to the final descent.

Specs & Shoe Notes

Technical Specs

Cushion Level
High Cushion
Surface
Trail / Racing
Drop
Not confirmed
Weight
275g

Foam Technology

The Cloudultra Pro uses Helion foam, an EVA-based midsole that sits in the middle of On’s cushioning hierarchy. Helion is chosen here for its durability, temperature stability, and controlled compression over long hours rather than soft rebound. Paired with CloudTec geometry, the foam delivers a firm, efficient underfoot feel that helps maintain consistency late into ultra-distance efforts. The ride prioritizes stability and predictability, which are critical as fatigue sets in.

Comfort & Fit Notes

Fit is performance-oriented with a secure midfoot and stable heel. The toe box allows room for swelling over ultra distances without feeling loose. Step-in feel is firm and supportive, designed to remain consistent and controlled deep into long efforts.

This Shoe Is Perfect For

Ultra-distance trail running, long races, and extended training runs on technical terrain.

How This Shoe Compares

Compared to Compared to Saucony Endorphin Edge

The Endorphin Edge is lighter and more aggressive, favoring speed over long-term protection. The Cloudultra Pro is more stable and protective for ultra distances and long races. Choose the Edge for shorter trail races and the Cloudultra Pro for long, demanding ultras.

Compared to Compared to HOKA Speedgoat

The Speedgoat offers more cushioning and a softer ride for comfort-focused ultra running. The Cloudultra Pro feels firmer and more precise, emphasizing stability and efficiency over plushness. Choose the Speedgoat for maximum comfort and the Cloudultra Pro for performance-driven ultras.

Local Benefits

Enjoy expert fitting with every purchase. Visit any Athletic Annex location for a free gait analysis, 3D foot scan, personalized shoe recommendations, and hands-on support to dial in your perfect fit. Prefer to shop online? Enjoy free shipping and free 30-day returns, so you can run, walk, or move in your shoes with total confidence.

Frequently Asked Questions