Colworth Marathon Challenge

Bedford, United Kingdom • 26-28 Jun 2026

The Colworth Marathon Challenge is a unique running event held at the scenic Colworth Estate in North Bedfordshire, UK. It features three races over three days, combining distances of 5 miles, 8.1 miles, and a half marathon of 13.1 miles, totaling the full marathon distance of 26.2 miles. The event offers multi-terrain and cross-country courses, with family-friendly activities including kids' races and entertainment. Participants can choose to enter one, two, or all three races. The challenge is organized by Colworth Striders and supported by local sponsors, with free camping and a welcoming atmosphere at the Colworth Sports & Social Club in Sharnbrook. Visit the organization's website for the most recent information.

Race information

13 mi
Colworth Half Marathon (13.1 Miles)
8 mi
Colworth Trail 8.1 (8.1 Miles)
5 mi
Colworth 5 & Family Fun (5 Miles)
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.