2026 Eden Project Marathon - Oct 18

Single multi-terrain loop from and back to the Eden Project, roughly 70% off-road / 30% public road marathon course in St Austell with 780m elevation gain. A genuinely tough, hilly multi-terrain course, not a flat road race. From the Eden Project the route winds through woodland, reclaimed china-clay land and open countryside, with the major climb up Helman Tor and a notably steep hill around mile 23, before a final half-mile that zig-zags down the side of the clay pit to finish beside the biome