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Estes Park's Backyard Ultra

Estes Park, United States • 21 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 4.252-mile loop every hour until only one runner remains, who is declared the winner. This format emphasizes endurance and strategy, as there is no predetermined end time.

Each runner receives 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, and runners switch directions every 12 hours. Proceeds support Childcare and Family Services in Estes Park. Visit the organization's website for the most recent information.

United States Colorado Estes Park

Race information

Website Registration
4 mi
150 m+
Backyard Ultra
Visit the organization's website for the most recent information.
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