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 without a predetermined end, making it a true test of endurance.

The event supports Childcare and Family Services in Estes Park, and all participants receive a custom Fractel hat, access to a stocked aid station, and a designated space in the athlete village. The course features a paved bike trail with a 150-foot elevation gain per lap. Visit the organization's website for the most recent information.