Estes Park's Backyard Ultra

Estes Park's Backyard Ultra is a unique ultramarathon held in Estes Park, Colorado, featuring scenic views of Lake Estes. Participants run a 4.252-mile loop on a paved bike trail with a 150-foot elevation gain per lap at 7,522 feet elevation. The race follows the Backyard Ultra format, where runners must complete each loop within an hour, starting clockwise and switching directions every 12 hours, continuing until only one runner remains.

All participants receive a custom Fractel hat, access to a stocked aid station, and a designated space in the athlete village. The event supports Childcare and Family Services in Estes Park. Visit the organization's website for the most recent information.