Chiltern Challenge

JUL
19
2025
Read all about the Chiltern Challenge on 19 Jul 2025 in Princes Risborough.
UTMB 50K 50 kilometers 25 kilometers 10 kilometers

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About the race

The Humanity Direct Chiltern Challenge is a one-day ultra running event held in the scenic Chiltern Hills, starting and finishing at Princes Risborough School in the South East of England. Participants can choose from three distances: 10km, 25km, or 50km, with ascent gains ranging from 258 to 871 meters. The course follows well-marked circular routes using National Trails and footpaths, featuring multiple checkpoints with food and water for longer distances.

The event offers a supportive atmosphere with fully stocked aid stations, medical cover, free parking, transport from the train station, and refreshments at the finish. Entry fees support Humanity Direct, funding vital surgeries for children in developing countries. Visit the organization's website for the most recent information.

50 km
25 km
10 km

Events nearby

Thames Valley LDWA challenge walk in Marlow on 4 October 2026 offering 25 km, 40 km and 50 km routes with checkpoints, mandatory kit and entry limits.
A guided trail half marathon of about 13 miles in the Chiltern Hills with grouped pacing, a midway refreshment point and a finisher’s medal.
A mixed-terrain 10 km and 5 km race around Frieth in the Chiltern Hills featuring woodland paths, country roads and notable climbs.
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