Rocky's Backyard Ultra

Estes Park, United States • 4 Oct 2025

Rocky's Backyard Ultra is an exciting ultra trail running event held in Estes Park, Colorado, at the YMCA of the Rockies. This unique race format requires 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.

The event offers a cash prize and buckles for those completing 100 miles. With unpredictable October weather and a vibrant natural setting, runners can expect a challenging yet rewarding experience. The event also provides amenities for families and spectators, making it a fun outing for all. 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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