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Chiltern Hills Backyard Ultra
Saturday, September 19, 2026 · Buckinghamshire., United Kingdom
Distances
6.4km
About this race
The Chiltern Hills Backyard Ultra is a 24-hour endurance race. Runners complete a 6.71km (4.17 mile) loop each hour. Remaining time allows for recovery before the next lap. Completing all 24 laps means running over 100 miles. The last runner standing wins. The event is held at Manor Farm in the Chiltern Hills.