ATW Grafham Triathlon

Join us for the Grafham Triathlon, hosted by the largest triathlon organizer in the UK! Whether you're an experienced athlete seeking a fast race or a newcomer looking for a safe, welcoming venue for your first open-water multisport event, Grafham Water is the perfect setting. This fantastic venue has hosted award-winning triathlons, national championships, and GB qualifier races—you're guaranteed to love it. Choose from two exciting distances: Standard Distance Triathlon: 1500m swim, 38km bike, 10km run Sprint Distance Triathlon: 750m swim, 17km bike, 5km run The swim takes place in the clear, beautiful waters of the Grafham Water reservoir, with laps on a 750m loop—one lap for Sprint and two for Standard. The bike course is a flat out-and-back route through some of the most scenic villages in the area. The Sprint course turns at the village of Perry, while the Standard course continues to the town of St Neots. The run features laps of a 5k route along the natural paths around Grafham Water. This flat route crosses the iconic dam wall and loops past the finish and transition area, where you'll receive great support on each lap. Sprint participants will complete one lap, while Standard participants will do two. For those who prefer not to run, there is also a standard-distance Aquabike (swim-bike) option.