ATW Grafham Triathlon 2025

Whether you are an experienced athlete looking for a fast race, or a novice competitor looking for a safe and friendly venue for your first open water multisport event, Grafham Water Standard Distance Triathlon is ideal.

Standard Distance Triathlon: 1500km swim | 38km bike | 10km run
Sprint Distance Triathlon: 170m swim | 17km bike | 5km run

We guarantee you’ll enjoy this fantastic venue that has been used for award-winning triathlons, national championships and GB qualifier races. With beautiful clean waters, scenic bike routes, flat run course, well-marked courses, supportive marshals, custom designed medal, finish line goodies, and FREE event photos you will love this event! Also offering a Relay & Aquabike option.