Course
An anticlockwise 100 km loop through the Chiltern Hills, run as a single distance. The route takes in the Ashridge Estate, Coombe Hill, Whiteleaf, Bledlow Ridge and Great Hampden.
Key dates
- !RegistrationOpen now
- ★Race daySat 2 Oct 2027
About
Challenge yourself to conquer the Chiltern Hills 100K Ultra, a scenic and demanding race through the stunning Chiltern Hills Area of Outstanding Natural Beauty in the United Kingdom. Runners will traverse some of the best and most beloved trails in this picturesque region, testing their endurance and resilience over the course of this epic 100K adventure.
Save Chiltern Hills 100K Ultra to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
-
Round Ripon Ultra
A 35-mile loop around historic Ripon
-
UK Ultra South Downs 100 Mile
A single loop through the South Downs with twelve aid stations
-
Run to the Sea Bournemouth
Ringwood to Bournemouth, finishing on the English Channel
-
Cornwall's Backyard Ultra
Last one standing: a 4.167-mile lap, every hour
A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.
