Join ATW at the Iconic Grafham Water for the Sprint & Standard Duathlon on Sunday, 26th October 2025!

Step up to the challenge and be part of an unforgettable day at one of the UK’s most celebrated multisport venues. Whether you're a seasoned athlete aiming for a fast-paced race or a first-time competitor seeking a welcoming environment, Grafham Water is the perfect setting for all levels of experience.

This isn’t just any race—it’s an opportunity to challenge yourself, push your limits, and enjoy the thrill of competing in a venue that has hosted award-winning events, national championships, and GB qualifier races.

Race Distances:

• Standard Duathlon – Run 10km, Cycle 38km, Run 5km
• Sprint Duathlon – Run 5km, Cycle 17km, Run 2.5km

The duathlon’s first run features a brand-new 5k lap course, taking you across the iconic Grafham Water dam wall with stunning views. You'll experience great support from the crowd as you loop back near the finish area. The Sprint event will have a shorter 2.5km lap, making it perfect for those seeking a faster, more focused challenge. The bike route is a speedy, out-and-back ride to St Neots with minimal turns, ensuring a fast and smooth experience, while the Sprint distance turns back in the village of Perry.

These events are draft-illegal, ensuring a fair and competitive race, with British Triathlon Motor Officials ensuring safety and fairness throughout the course.

Why Choose Grafham Water?

• A Stunning Venue: Known for its exceptional facilities, Grafham Water offers an ideal location for both experienced athletes and newcomers.
• Supportive Environment: Whether you're aiming for a personal best or just a great race day experience, you'll find a welcoming community here.
• Fast and Scenic Course: Enjoy a smooth, fast bike ride and a beautiful running course with breathtaking views.

Book Your Spot Today!
Don’t miss out on this incredible multisport event at one of the UK's most iconic venues. Join us on Sunday, 26th October, and be part of an exhilarating day of racing and achievement.

Read event reviews on Racecheck

If you are looking to qualify for the European Championship Standard Duathlon, athletes must register their intent to qualify by 5pm on the Friday before the qualifying race. Please click here to register your intent to qualify and for more information. No late registrations will count.
For further information, follow this link Age Group Qualifiers Calendar – British Triathlon

Event Organiser
Founded in 2011 by James Shipley, ATW has grown to become the UK's largest multisport event organiser. Specialising in running, triathlons, duathlons, aquathons, cycling, swimming, and all swim-bike-run events, ATW hosts over 40,000 participants annually. We’re dedicated to helping you Dream, Believe, and Achieve.