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Chiltern 50 - Ultra Challenge®

September 26, 2026

A 50km looped challenge in some of the Chilterns finest countryside, with historic trails, rolling hills, nature reserves, with fantastic views. Join up to 2,000 adventurers and take it on at your pace as a walk, jog, or run - and fundraise for Action for ME.

A basecamp in Henley, and a route with real variety and some wonderful scenery – and easily accessible from London. Sign up as an individual or as a team; you’ll get full support all the way, plenty of food & drink, optional camping & transfers, a special medal, T shirt and celebration finish. With 25km & 10km options also available.

Date

Saturday 26th September 2026

Location

The Chilterns, UK

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People hiking on a forest trail in daylight with backpacks and walking poles

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