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Join us at the beautiful and iconic Grafham Water to experience one of the country’s most popular middle distance swim-bike-run events, delivered by triathletes for triathletes.ATW Grafman was voted National Event of The year 2014, hosted the Triathlon England Middle Distance Championships in 2015 and 2023 and the British Championships in 2016.
This event is open to everyone, regardless of ability and there are plenty of activities at the venue to keep the whole family entertained while you race. There is an overall cut off time for the event of 9 hrs 30 mins.
This race has a draft illegal bike leg.
For those wanting the challenge of the Swim-Bike, but without the run, take on the Grafman Aquabike, with your race finishing at the entrance back in to transition after the bike leg.
Registration and Transition opening times will be advised in the final details.
Follow GRAFMAN TRIATHLON on Facebook to keep up to date with the latest event updates & coverage!
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
Stay Over?
You can now camp the night before the event! We are pleased to offer the option of camping through Lakeview Paddock. To view details click HERE
We are delighted to let you know that the Grafham Water centre are offering dormitory style accommodation the night before the event. Take the stress out of getting on site in time for the event by booking your accommodation HERE
REASONS TO ENTER THIS EVENT
1.9K swim with an 'Aussie style' exit at the half way stage of the swim, 90K bike course on quiet country lanes, 21K run course with fantastic views of Valve Tower, Aquabike & relay option, Custom designed medal, Water & nutrition stations, Finish line snacks & goodies, Supportive marshals, Well-marked course, Over 50 reviews on Racecheck, On-site cafe & playground for family spectators.
Purchase your 2026 event t-shirt now and collect on event day from the registration stand.
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.
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.
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Event Venue
Grafham Water, Marlow Park,Huntingdon, United Kingdom
Tickets
Concerts, fests, parties, meetups - all the happenings, one place.
