Chiltern Challenge

Princes Risborough, United Kingdom • 19 Jul 2025

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.

Race information

UTMB 50K
50 km
25 km
10 km
Visit the organization's website for the most recent information.
Trail runs nearby

Choose your distance on the day from 7 km up to a 40 mile ultra on scenic mixed trail and road loops around Chalfont Park. Drop bags, pacers and crew are welcome and there is an aid station plus a trained medic on site for support.

Tackle the Thames Trail Ultra, a scenic 47 mile point to point run from Iffley to Henley on Thames. Enjoy mainly off road riverside trails, friendly checkpoints and a welcoming finish with showers and hot drinks.

UTMB Index

Thames Path Trail Run : Windsor Racecourse, 26 October 2025 The Thames Path Trail Run takes place at Windsor Racecourse on 26 October 2025. The route follows sections of the Thames and nearby countryside. Distances offered: 21km 16km No do..

Event overview The Chiltern Ridge Winter 50K is a single-loop trail race held in the Chilterns, with the start and finish at Berkhamsted Cricket Club. The next edition is on 1 November 2025. The event distance is 50K with approximately 800..

UTMB Index

Join a guided 10 km trail run through the Chiltern Hills with Run The Wild, grouped by ability and suitable for runners who can cover 5 km non stop. Finish with a Tring Brewery tour, beer tasting and a bottle to take home.

The Wendover Woods Marathon, Half Marathon & 10k is a scenic autumn trail running event held in Wendover Woods, Buckinghamshire. The race features multi-terrain, hilly courses with significant climbs, making it a challenging yet rewarding e..