ATW Odyssey At Box End Triathlon

The ATW Box End Triathlon returns in 2026, featuring Sprint, Standard and the brand-new Odyssey distance. This year’s event is even more special as it will also host the Inter Services Triathlon Championships – giving everyday athletes a once-in-a-lifetime opportunity to line up alongside competitors from the Army, Royal Navy, Marines, RAF, Ambulance Service, Fire Service, Police and Prison Service. While the Inter Services Championships are an exciting part of this year’s event, the race is open to absolutely everyone – from first-time triathletes to experienced competitors. Whether you’re chasing a personal best or just looking to enjoy the day, you’ll find the Box End Triathlon welcoming, supportive, and unforgettable.