Course
A 4.167-mile trail loop from The Waggoners pub at Ayot Green near Welwyn Garden City, run on the hour every hour in last-one-standing format. The loop is designed to stay safe and runnable through the night, with the race cut off at 10pm on the Sunday.
Key dates
- ★Race daySeptember 2027 · date to be announced
About
The Endless Garden Backyard Ultra challenges runners to keep going in a last-one-standing format on an undisclosed course in the rolling hills of Hertfordshire. This unique event tests the limits of human endurance as participants compete to see who can complete the most laps around a looped course in the peaceful English countryside.
Save The Endless Garden Backyard Ultra to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.