Chiltern Ridge Winter 50K

Berkhamsted, United Kingdom • 1 Nov 2025

The Chiltern Ridge Winter 50K is an autumn/winter trail ultra marathon held in the Chiltern Hills, starting and finishing at Berkhamsted Cricket Club. Covering 50 kilometers with over 800 meters of elevation, the race follows a specially designed looped course featuring scenic woodland trails, Berkhamsted Common, the National Trust's Ashridge Estate, and sections of The Ridgeway National Trail. The route includes three aid stations stocked with hydration, nutrition, and fresh fruit. The event is fully marked with arrows and ribbons, supported by marshals, and has a 9-hour time limit. It welcomes runners aged 20 and above, with a maximum of 250 participants, and is part of the UTMB World Series. Visit the organization's website for the most recent information.

Race information

UTMB 50K
50 km
800 m+
50k Ultra
Visit the organization's website for the most recent information.
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