The Eternal Damnation Backyard

Event overview

The Eternal Damnation Backyard is a Last Man Standing style backyard ultra held at Wilson State Park (Hell Creek area) outside Dorrance, Kansas. The start and finish are at the Switchgrass Mountain Bike Trail parking lot. The course begins with about 3/4 mile on pavement, then continues as single-track mountain bike trail that runs beside Wilson Lake. Each lap starts and ends in the Switchgrass Mountain Bike Trail parking lot. The required loop length is 4 miles 880 feet (metric equivalent 6.7056 km).

Format, rules and logistics

Loops start precisely one hour after the previous start; competitors must start at the bell and complete each loop within an hour. Rules specify no late starts, no personal aid during a loop (common aid stations are allowed), no non-competitors on course, no artificial aids (including trekking poles), and slower runners must allow passes. Timing of loops is optional. The event is open-ended; the winner is the last person to complete a loop. Minimum age to compete is 16. No refunds or bib transfers; only deferrals with credit on a specified schedule.

Each runner may bring two crew members. Race organizers will provide water and a specified endurance fuel; runners must provide their own food and plan for no electricity at the crew area. All finishers receive event apparel and a custom finishers plaque with their distance; additional awards and special items are described for various accomplishments. The event is presented by Ultraverse Supplements and is the first race in the Ultraverse Kansas Slam. Registration closes April 12, 2026. Visit the organization's website for the most recent information.