Rocky's Backyard Ultra

Estes Park, United States • 4 Oct 2025

Rocky's Backyard Ultra is an exciting ultra trail running event held at the YMCA of the Rockies in Estes Park, Colorado. This unique race format challenges participants to complete a 4.167-mile loop every hour until only one runner remains. The course features stunning Rocky Mountain scenery, with approximately 500 feet of elevation gain per lap.

Runners can expect a variety of weather conditions in October, adding to the adventure. The event includes a cash prize for 100-mile finishers, custom awards, and access to amenities for participants and their families. It's a thrilling experience for both athletes and spectators alike. Visit the organization's website for the most recent information.

Race information

4 mi
500 m+
4.167 Miles
Visit the organization's website for the most recent information.
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