Skip to main content

ultrarunning.ai is in Beta . We're actively building. Thanks for your patience!

Coming soon

Build a workout. Run it on your watch.

The workout builder turns a session into a structured workout that lives on your watch — warmup, repeats, recovery and cooldown, with pace or heart-rate targets on every step.

Build it in steps

Warmup, a main set you can repeat, and a cooldown — each step a time or a distance.

Target pace or heart rate

Set a pace range or HR zone per step, exactly how you want the session run.

Straight to your watch

Workouts push to intervals.icu and sync on to Garmin, COROS, Suunto, Wahoo and Zwift.

We're testing it with a small group right now.

It will open to everyone shortly. In the meantime your AI Coach can still plan your week.

Welcome to Ultrarunning.ai

The definitive ecosystem for athletes pushing their limits.

Train
AI-personalized plans from 50K to 200M, adapted to your fitness, race date, and terrain.
Crew
Coordinate race-day crew, pacers, aid stations, and drop bags with a shared live plan.
Race
Discover races, plan your pacing and nutrition, and visualize any course from a GPX file.

Free to start. Sign up and try the AI coach, race planner, and crew tools, no credit card.

Coming soon:Strava sync · iOS & Android apps (Add to Home Screen)
Want an app now? In Safari, tap the Share icon → Add to Home Screen for a native-like experience.