Harrold-Odell 25km & 50km Trail Race Series - September 2025

Step into a welcoming and supportive trail community at the uniquely encouraging Thunder Races event on March 7, 2026. This UK series is specifically designed to demystify ultrarunning, offering fully marked and supported courses with generous cut-offs that allow runners of all levels to focus purely on the joy of moving through the countryside. The event radiates an inclusive, high-energy atmosphere fueled by enthusiastic volunteers and a shared commitment to making trail running accessible and genuinely fun for "real people." Whether you're tackling your first ultra or seeking a positive, low-stress racing experience, Thunder Races prioritizes camaraderie and personal achievement over intimidating competition.

The courses are carefully crafted to be both beautiful and runnable, featuring manageable yet challenging routes through lovely British landscapes that are as mentally rewarding as they are physically engaging. This is trail running done differently—where the finish line is celebrated with the same enthusiasm as the starting line, and every participant is part of a collective journey. Lace up for a day where the primary goal is to run together and go further, surrounded by friendly faces and the uplifting spirit that defines the Thunder Races community.