Be part of a UK first.

This isn’t just another triathlon—it’s the first event of its kind where you decide the distance, from sprint to full, and race your way. Take on your first sprint, step up to standard or Odyssey middle, or go all the way with the Odyssey full distance—the choice is yours. And for sprint, standard, and Odyssey middle distances, there are no cut-off times. No pressure. No chasing the clock. Just the freedom to swim, bike, and run at your pace.

Want to share the challenge? Every distance can also be done as a team relay, so you can race alongside friends, family, or teammates. Together, you’ll experience the electric atmosphere and cross the finish line as one.

And if triathlon isn’t your thing, we’ve got you covered. Alongside the multisport action, there’s a 12-hour endurance run where you can push your limits as an individual or join forces in a relay team. Run as far as you can in 12 hours, soak up the support on course, and celebrate every step.

But the event is about more than just racing. The festival will be alive with activity throughout the day, offering live entertainment, a funfair, plenty of food and drink, and a welcoming atmosphere that makes it perfect for families and spectators. Whether you are on the course competing, cheering from the sidelines, or simply soaking up the atmosphere with friends, there will be something for everyone to enjoy. You can also book a camping spot with us on Friday and Saturday to make things a little easier on the morning of the event. Campers will need to vacate the field by 10am on Sunday morning. Book your camping HERE

This event is about breaking down barriers, welcoming everyone, and redefining what it means to take part. Whether you’re chasing a PB, tackling your first-ever race, or simply out to enjoy the experience, you’ll find encouragement every step of the way.

This is triathlon—and endurance sport—like you’ve never seen it before. The most inclusive, welcoming, and inspiring event in the UK.

Want to hire a wetsuit for the season? We are proud to offer Zone3 wetsuits. Find out more HERE

Want to hire a wetsuit for a day, weekend or month? Find out more HERE

Charity - Join us in making every stride count by raising money for our partner charity, Alzheimers Research UK - your run will not only challenge your limits but also change lives, one step at a time, for a cure. Opportunities to donate and fundraise will appear at checkout.

ATW Transfer & Refund Policy

At ATW, we understand that sometimes plans change. While we do not offer refunds or transfers to another person, we provide a hassle-free event transfer option for those unable to attend their booked event. If you are unable to participate in your scheduled event for any reason—including injury, illness, pregnancy, bereavement, or other unforeseen circumstances—you can transfer your entry to any future ATW event. There is no proof required, we trust you!
Even better news, transfers can be made all the way up to 48 hours before your original event date.

Event Organiser

ATW was established in 2011 by James Shipley. We have now become a national events company in the UK, specialising in Running, Triathlon, Duathlon, Aquathon, Cycling, Swimming and all permutation of swim-bike run events. With over 40,000 entries a year ATW has become a firm favourite amongst people who are determined to Dream, Believe and Achieve.