The Northumbrian

The Northumbrian is an ultimate endurance triathlon event set in the picturesque Kielder Water and Forest, showcasing the stunning landscapes of Northumberland. Participants can choose between full and half-distance iron triathlons, featuring a 2.4/1.2-mile swim, a 112/56-mile bike ride, and a 26.2/13.1-mile run along scenic forest trails. The event, which began in 2022, emphasizes adventure, achievement, and the unique character of the region.

Scheduled for its fourth edition in June 2025, it offers a range of amenities, including electronic chip timing, on-course support, and a finisher's goody bag. Visit the organization's website for the most recent information.