Estes Park's Backyard Ultra
Estes Park, United States • 14 Jun 2025
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 a stocked aid station, and a designated space in the athlete village. The course features a paved bike trail with a moderate elevation gain, ensuring a challenging yet scenic experience. Visit the organization's website for the most recent information.