BigSea Trails (WATER)

Challenge yourself on Dorset’s Isle of Purbeck with BigSea, part of the Classic Element Trail Series. Starting and finishing on the sands of Knoll Beach in Studland, the race offers four single-loop routes: a 54 km Ultra, an 18-mile Challenge, a full Marathon (26.2 miles / 42.2 km), and a Half Marathon (13.1 miles / 21.1 km).

Each course takes runners through iconic coastal and countryside landmarks including the Purbeck Hills, Corfe Castle, Kimmeridge Bay, Chapman’s Pool, Dancing Ledge, Durlston Castle, and Old Harry Rocks. As the “Water” event in the four-part series—Earth, Water, Fire, Air—BigSea tests athletes with steep climbs, rugged coastal trails, and expansive sea views. Designed to push both endurance and resolve, this race is a standout challenge in one of England’s most striking landscapes.