Chiltern Ridge Winter 50K

Chiltern Ridge Winter 50K is a single-loop trail ultra starting and finishing at Berkhamsted Cricket Club in the Chilterns. The 50-kilometre course climbs about 800m and threads through Berkhamsted Common and the Ashridge Estate, then follows The Ridgeway National Trail to Aldbury and Wendover before looping back via woodland single-track along the Chiltern Way. The route offers scenic views, clear navigation with orange markers and marshals, plus three full aid stations with drinks, gels, and fruit, and on-site medical support.

With a 9-hour limit and a cap around 250 runners, it’s UTMB World Series-indexed and attracts both seasoned ultras and first-timers. Visit the organization's website for the most recent information.