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The Eternal Damnation Backyard

Sylvan Grove, United States • 18 Apr 2026

The Eternal Damnation Backyard is a challenging backyard ultra event held at Wilson State Park near Dorrance, Kansas, featuring the Switchgrass Mountain Bike Trail. The course is a 4.88-mile loop, mostly single-track trail alongside scenic Wilson Lake, known as the clearest lake in Kansas. Runners complete hourly laps, each starting exactly one hour apart, continuing until only one remains.

The race offers a supportive atmosphere with space for crews and encourages camaraderie among participants. All finishers receive custom swag, including shirts and plaques, with special awards for the last runners standing. The event 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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