The Endless Garden Backyard Ultra

About The Endless Garden Backyard Ultra

The Endless Garden Backyard Ultra The Endless Garden Backyard Ultra starting on 27 September 2025 is a last one standing ultra marathon in Welwyn, Hertfordshire. Entrants complete a 4.167-mile loop every hour, on the hour, until only one runner remains. The course is based from The Waggoners, Ayot Green and is based on trails designed to be safe and runnable throughout the night. Please refer to the event website for all rules associated with the Backyard Ultra format. 1 x 4.167 mile loop per hour - Last one standing format

Race Schedule

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