ATW
ATW Grafman Middle Distance Triathlon
Next Race: 06/06/2027
Grafham Water Visitor Centre, Marlow Park, Grafham, Huntingdon, Cambs, PE28 0BH
A middle-distance Triathlon you'll never forget!
Join us at the breathtaking Grafham Water for one of the UK's most iconic middle-distance triathlons.
For years, the ATW Grafman has been a bucket-list event for triathletes across the country, combining a stunning venue, an unforgettable course and the friendly atmosphere that ATW events are known for. It's an event that welcomes athletes back year after year, while inspiring newcomers to take on their very first middle-distance challenge.
Whether you're stepping up to the distance for the first time, chasing a personal best, racing as part of a relay team or simply looking for your next big adventure, you'll find yourself surrounded by a supportive community of athletes, marshals and spectators all cheering you towards the finish line.
Proudly voted National Event of the Year in 2014, the ATW Grafman has also hosted the Triathlon England Middle Distance Championships in 2015 and 2023, along with the British Middle Distance Championships in 2016—cementing its place as one of the UK's favourite middle-distance events.
Choose your challenge
However you want to experience Grafman, there's an option for you.
Take on the Middle Distance Triathlon, tackle the Middle Distance Aquabike if swimming and cycling are your strengths, or share the experience with friends in the Middle Distance Relay.
No matter which race you choose, you'll experience the same incredible atmosphere, spectacular venue and unforgettable finish line.
The bike course is strictly non-drafting, and the overall event cut-off time is 9 hours 30 minutes, giving athletes plenty of time to enjoy every part of the challenge.
An unforgettable course
Everything about Grafman has been designed to give athletes an experience they'll remember long after race day.
Your day begins with a 1.9km open water swim in the crystal-clear waters of Grafham Water, complete with the event's famous Aussie-style exit halfway through to the cheers of spectators.
From there, you'll head out onto a scenic 90km bike course, taking in quiet country lanes and rolling Cambridgeshire countryside before returning to transition.
The final challenge is a 21km run, where you'll soak up stunning lakeside scenery, pass the iconic Valve Tower and enjoy incredible support as you make your way towards the finish line.
Whether you're racing for a time or simply aiming to cross the finish line, every section of the course offers something to enjoy.
Event weekend
We know race morning is an important part of your day, so we've made everything as straightforward as possible.
Registration and transition open from 5:30am on race morning, with an evening-before registration option available for athletes staying locally. All bike racking takes place on race morning, helping to ensure your bike is ready to go just before you race.
Stay close to the action
Why not turn race day into a full weekend?
Camping is available through Lakeview Paddock, just moments from the start line in Grafham Village, making for a relaxed race morning and giving you even more time to enjoy the event atmosphere.
Need a wetsuit? We've partnered with Zone3 to offer seasonal hire, along with flexible day, weekend and monthly hire options, making it even easier to get race ready.
Why athletes love Grafman
There's a reason so many athletes return to Grafman year after year.
From the moment you arrive, you'll experience a welcoming atmosphere that makes first-time middle-distance athletes feel just as at home as seasoned competitors. The spectacular swim venue, scenic bike course and beautiful lakeside run combine to create one of the UK's most memorable middle-distance races.
Friendly marshals will support you every step of the way, with well-stocked hydration and nutrition stations positioned around the course to keep you fuelled throughout your race. The routes are clearly marked, allowing you to focus on enjoying the challenge ahead.
Every finisher earns a bespoke Grafman medal, together with finish-line snacks and goodies to celebrate an incredible achievement.
Away from the racing, spectators can enjoy the on-site café, children's playground and beautiful surroundings, making Grafman a fantastic day out for the whole family.
Your next challenge starts here
Whether you're returning to chase another unforgettable day at Grafham Water or taking on your very first middle-distance event, you'll receive the same warm welcome, incredible support and unforgettable race experience that have made the ATW Grafman one of the UK's most loved middle-distance triathlons.
Come and discover why so many athletes make Grafman part of their season, year after year!
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.
ATW Community
At ATW we think of our participants as a community and we love to hear about the community's dreams and achievements.
If you'd like to share those dreams and achievements you can do so on any of our social media platforms. Equally if you'd like any advice about your upcoming event you will almost certainly find someone who can provide some guidance.
Links to all our social media platforms are at the bottom of the page, including to our ATW Chat Facebook group, which might be the most interactive platform if asking for help.
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.
Location
Directions
Parking is available at Grafham Water, with on site payment machines.