Estes Park's Backyard Ultra

Estes Park's Backyard Ultra is a unique ultra-running event set against the stunning backdrop of Lake Estes, Colorado. Participants must complete a distance of 4.252 miles within one hour, every hour, until only one runner remains. This format continues indefinitely, with the last runner standing being declared the winner.

The event supports Childcare and Family Services in Estes Park, and all participants receive a custom Fractel hat, access to an aid station, and a special award for either finishing or not finishing. The course features a paved bike trail with a total elevation gain of 150 feet per lap. Visit the organization's website for the most recent information.