Colorado
Coming 2025"Miles High, Miles Wide."
Colorado is where runners come to test themselves. Boulder's Chautauqua trails, the Rockies' high-altitude roads, and a trail running culture that goes back generations. Thin air, big views, serious mileage.
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We're mapping routes and connecting with clubs in Colorado right now. Get notified when we launch.
Explore by area
What to expect
We're building Colorado now.
Curated local routes
Run club directory
Area guides & trail conditions
Why run in Colorado?
Altitude Training Mecca
Boulder sits at 5,430 feet and is surrounded by trails climbing to 8,000+. The altitude and community have made it a magnet for elite runners worldwide.
Trail Race Capital
Colorado hosts more trail races per capita than nearly any other state. The Leadville 100 alone draws runners from 50+ countries every August.
Colorado Running
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Be first to know when Colorado launches — new routes, clubs, and more.