Dunstable Downs Trail Half Marathon

Conquer the iconic chalk ridge of the Chilterns at the Dunstable Downs Half Marathon on Sunday, June 21st, 2026. This prestigious UTMB World Series Index Race offers a classic yet challenging 21.2km trail experience through the heart of the National Trust's stunning Dunstable Downs estate. Prepare for a memorable mix of sweeping panoramic views, fast descents, and leg-testing climbs, all wrapped into a perfectly curated route that includes the historic Tree Cathedral and the dramatic Kensworth Quarry. With a capped field of 300 runners, the event ensures an intimate, well-supported atmosphere with professional aid stations and meticulous organization. Whether you're a seasoned trail runner seeking a quality UTMB index or new to the hills looking for a scenic adventure, this race delivers an unforgettable 2026 trail half marathon in Bedfordshire. Secure your early entry for a day of pure, hilly running joy atop one of England's most famous landscapes.