Dunstable Downs Half Marathon
Dunstable Downs, United Kingdom • 22 Jun 2025
The Dunstable Downs Half Marathon is a challenging off-road trail race held at the National Trust's Dunstable Downs estate in the Chiltern Hills, UK. Covering 21.2 km with over 450 meters of elevation, the course features rugged chalk ridge trails, ridgeline views, steep climbs, exhilarating descents, and scenic landmarks such as the Tree Cathedral, Bison Hill, Kensworth Quarry, and Five Knoles. The race is fully marked with orange arrows and ribbons, supported by marshals, and includes one aid station offering water, energy gels, and snacks. Limited to 300 runners aged 17 and over, the event offers a vibrant atmosphere with on-site facilities including parking, toilets, and a café. It is part of a summer half marathon challenge series in the Chilterns. Visit the organization's website for the most recent information.