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

Run the Wild Half Marathon - Chiltern Hills The Run the Wild Half Marathon is a guided trail event based in the Chiltern Hills, starting from The Home Office in Tring. The route covers around 13 miles (about 21 km) with approximately 300 m..

Buckingham 10k is a charity running event in Buckingham Town Centre. The 10km multi-terrain route, organized by Run for the Sky, starts in the town centre and winds through Stowe Avenue, Stowe National Trust Gardens and farmland, offering a..

The Ridgeway Run is a challenging 15-kilometre (9.3 miles) trail race organized by Tring Running Club, featuring scenic routes mainly on footpaths and bridleways with stunning views of the Chilterns. The course starts near Tring, ascends th..

North Chilterns 50K - Event overview The North Chilterns 50K is a trail ultra held from Putteridge Bury Country House. The 4th edition takes place on Sunday 12th October 2025. The course distance is 50 km with approximately 798 m of elevati..

UTMB Index

Event The Frieth Hilly 5km and 10km is scheduled for 12 October 2025 at Frieth Primary School, Frieth Hill, Henley-on-Thames RG9 6PR. The courses run in the Chiltern Hills between Marlow and Henley-on-Thames, about 35 miles from central Lon..

Event details The Marlow Donkey is a walking and running challenge held on 12 October 2025 in Marlow, Bucks. The event base is Liston Hall (Marlow Community Association), Chapel Street, Marlow, SL7 1DD. It is organised by LDWA - Thames Vall..