RunThrough Carsington Water Half Marathon & 10k December 2026

The RunThrough Carsington Water Half Marathon & 10K takes place in December at Carsington Water Reservoir, located near Ashbourne in Derbyshire. Participants can select either the half marathon or the 10K distance. Both races commence at 9:30 AM. The event has a limit of 1,000 participants, and registration will close upon reaching this capacity. The course follows the reservoir's perimeter on undulating, traffic-free trails, differing from a flat road race. RunThrough, the organiser also responsible for numerous other UK events such as the Birmingham Running Festivals, manages this race. The entry fee is consistent for both affiliated and unaffiliated runners.