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The Eternal Damnation Backyard

Sylvan Grove, United States • 18 Apr 2026

The Eternal Damnation Backyard is a challenging ultramarathon held at Wilson State Park in Kansas. The race features a 4-mile loop on a mix of pavement and single-track mountain bike trails, running alongside Wilson Lake. Participants aim to complete as many loops as possible within an open-ended, self-sustained event, with rules ensuring fairness and safety.

Runners receive unique swag, including shirts and finisher plaques, and can bring crew members to support them. The event encourages personal achievement and camaraderie, with opportunities to qualify for the World Championships and earn special awards. It is part of the Ultraverse Kansas Slam series. Visit the organization's website for the most recent information.

United States Kansas Sylvan Grove

Race information

Website Registration
4 mi
4 Miles 880 Feet Loop
Visit the organization's website for the most recent information.
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