Thetford Back Yard Ultra
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About the race
Thetford Back Yard Ultra Festival, held at High Lodge in Thetford Forest, Suffolk, is Challenge Running’s Backyard Ultra. Runners complete a 4.167-mile loop (6.7056 km) every hour, with the last person to finish declared the winner. The course is a wide, flat forest route, mostly gravel or grass with a small hill, fully signed for fast laps.
In 2026 a 6-hour and a 12-hour option is available at reduced cost, with the same setup but no winner and no prizes. Features include chip timing, a £250 prize for the main winner, free entry to the Suffolk Backyard Ultra for winner and assistant, on-site camping for runners and crews, a single aid station, and volunteer support. Visit the organization's website for the most recent information.