Thunder Races

Bedford, United Kingdom • 7 Mar 2026

Event details

Thunder Races is a trail-running series held in Bedfordshire, centred at Harrold Odell Country Park. The event date listed is 7 March 2026 and the location is Harrold, Bedfordshire, UK. Participants can choose from two distances.

  • 25 km
  • 50 km

Race features

Courses run largely on woodland and countryside trails with minimal road running. Races are listed on the UTMB Index. The events use marked routes and provide course support including aid stations and marshals. Finishers receive a medal and finisher items, and there is a finish arch at the event. Volunteer roles are available; volunteers receive free entry to any Thunder Races event the following year. Visit the organization's website for the most recent information.

Race information

UTMB 50K
50 km
25 km
Visit the organization's website for the most recent information.
Trail runs nearby

Experience the Petzl Night Trails 10K at Salcey Forest under torchlight. Tackle a two lap trail, bring a head torch, enjoy Petzl demos, canicross starts and post race hot drinks plus a medal or tree token.

Enjoy panoramic Chiltern views on woodland trails at Wendover Woods with 5K, 10K and Half Marathon distances plus a spirited 5K Canicross for dogs and owners. Finishers receive a custom medal and enjoy the friendly ATW event atmosphere.

Tackle 26.3 miles around Colworth Estate with five scenic laps of gently undulating trail and lanes, including woodland paths and narrow sections. Friendly club facilities, cup free so bring your own bottle, 30 November in Sharnbrook.

Run a scenic 10 mile trail around Grafham Water, weaving through woodland, Dragonfly Pond and Sanctuary Bay before a final mile along the dam wall. Canicross runs in a separate wave so you can bring your dog on a lead.