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. Participants must complete a 4.167-mile loop every hour until only one runner remains, who is declared the winner. The course features stunning Rocky Mountain scenery, with approximately 500 feet of elevation gain per lap. The event includes a cash prize for 100-mile finishers and offers amenities such as a stocked aid station and access for crew members. With unpredictable October weather, runners can expect a unique and adventurous experience amidst the beautiful fall landscape. Visit the organization's website for the most recent information.