Chiltern Hills 100K

The Chiltern Hills 100K is a challenging ultra marathon held in the Chiltern Hills, starting and finishing in Chesham, Buckinghamshire. The 100-kilometer course features an anticlockwise loop passing notable landmarks such as Ashridge Estate, Coombe Hill, and Bledlow Ridge, incorporating sections of The Ridgeway, Chiltern Way, and South Bucks Way trails. With over 1800 meters of elevation gain, the race is fully marked and includes six well-stocked aid stations offering hydration, nutrition, and restrooms.

The event supports GPS tracking and requires runners to carry essential gear for safety. Limited to 250 participants aged 20 and over, it is a UTMB World Series Index Race, promising a scenic and well-organized trail running experience. Visit the organization's website for the most recent information.