Chiltern Hills Backyard Ultra 24
Saturday, 19 September 2026
Bradenham, High Wycombe, UK
The Chiltern Hills Backyard Ultra 24 on 19 September 2026 is a 24 Hour endurance event in Buckinghamshire.
The event planned for 19 September 2026 has been cancelled. The next event date is to be confirmed.
A Backyard Ultra is a form of ultramarathon race where competitors must consecutively run a 6.71km / 4.17 mile course in less than one hour, every hour. When each lap is completed, the remaining time within the hour is used to recover and replenish for the next hour's race.
This event has a 24 Hour time limit - Complete all 24 laps and you have run over 100 miles. Anyone who makes the final lap is in for the final showdown.
The event is based at Manor Farm, Bradenham.
Distances/Events
1 x 4.17 miles lap per hour - Last one standing format for 24 Hours


