Chiltern Hills 100K

OCT

2

2027

A 100K ultramarathon in the Chiltern Hills on an anticlockwise loop from Chesham, passing Ashridge Estate, The Ridgeway and Whiteleaf Hill, with marked route, open GPS tracking, aid stations and a 19 hour time limit.

Sat 2 Oct 2027

Chesham, South East (England)

Website

100 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Chiltern Hills 100K

The Chiltern Hills 100K is an ultramarathon set to take place on 2 October 2027 (TBC). The event is based at Chesham Guides HQ, Buckinghamshire (HP5 1HX), and follows an anticlockwise loop around trails in the Chiltern Hills. The route distance is 100K with over 1800 m of elevation gain and a time limit of 19 hours.

The course passes a number of named landmarks and areas, including the Ashridge Estate, The Ridgeway (Ivinghoe Beacon to Aldbury), Tring Park, Wendover, Coombe Hill, Whiteleaf Hill, Bledlow Ridge and Great Hampden, before returning to Chesham. The route is fully marked and uses open GPS tracking. A GPX file and printable map are available, and a runner's guide and spectator guide are provided by the organiser.

Checkpoint and aid station locations include Hastoe Village Hall (14KM and 41.4KM), Little Gaddesden Village Hall (28KM), Whiteleaf Hill (57.8KM), Bledlow Ridge Village Hall (75.3KM) and Little Hampden (88KM). Several aid stations list toilet facilities.

The race is limited to 250 runners, has a minimum age of 20, and is licensed by the Trail Running Association under UKA rules. It is listed as a UTMB World Series Index race. Entry fees are shown as £152, with a UKA affiliated rate noted; entries are currently closed. Visit the organization's website for the most recent information.

100 km

100k Ultra