Middle Distance Triathlon
Sun 4 Jun 2023 Huntingdon, Cambridgeshire, UK

ATW Grafman Middle Distance Triathlon

Take on a superb middle distance triathlon at the fantastic Grafham Water. Suitable for all abilites, with a challenging, but achievable course, and custom medal at the finish line.

Enter now
  • Sun 4 Jun 2023
Grafham Water Visitor Centre, Huntingdon

Middle Distance Triathlon



Age 18 & over on 31 Dec 2023

  • 1900 m lake swimming
  • 90 km road cycling
  • 21 km multi terrain running


ATW Grafman has previously been voted National Event of the Year!

The Grafman is well established within the triathlon community and continues to grow in popularity. The race has previously been voted National Event of the Year and was also selected for the Triathlon England Middle Distance Championships 2015 and British Championships 2016.

In 2023 the Grafman will return to championship status and will be the English Middle Distance Championships!

However, the 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. 


  • Award-winning MULTI-SPORT event

    Previously voted National Event of the Year and is also an English Middle Distance Championship event.

  • Excellent for spectators

    The start, the swim, much of the run and the finish are all conveniently located together at the reservoir.

  • Challenging but achievable

    An undulating and rolling course offers a challenge but also the potential for a fast time.

  • Great crowd support

    Enjoy huge cheers as the run leg passes the crowds of supporters numerous times. 

  • Custom medal and prizes

    Grab a superb, custom-designed medal, with prizes for top male and female finishers. 

This event is part of ATW Grafman Middle Distance Triathlon.

  • All fitness levels
  • Event village
  • Newcomers
  • Teams
  • Wetsuit not allowed if too hot
  • Wetsuit required if too cold

Fitness level

Aimed at athletes of all ability and experience levels, the Grafman Triathlon offers an enjoyable event in superb surroundings. There are plenty of activities available at the venue to ensure that friends, family and supporters are entertained during the race. 

  • Bag storage
  • Cafe
  • Paid parking
  • Park
  • Rural
  • Toilets

Event HQ

Grafham Water Visitor Centre
PE28 0BH

Situated close to the A1, Grafham Water is easily reachable from the the north and south by road.

By rail, the closest stations to the venue are at Huntingdon and St Neots.

  • Marshals
  • Undulating
  • Water stations

The start, the swim, much of the run and the finish are all conveniently located together, making excellent spectator viewing at Grafham Water Reservoir. The swim takes place in the lake consisting of a two lap course that is easy to navigate; a quick Australian style exit on each lap makes a great spectacle for your family/friends to support you from.

Once you are out of the water there is a short run to the grass transition area and you are straight out on your bike. The roads around the villages offer great surfaces for fast riding and only the odd short climb to challenge you. The bike course will be fast, but don’t underestimate it – especially if it’s a windy day!

On returning to Grafham Water, your run will take you on a two-lap out-and-back course around the edge of the lake passing transition multiple times, with breath-taking views over to Valve Tower. The run will consist of both tarmac and hard compound tracks.

Race summary

  • Swim

    Starting on the beach, complete two 950m laps, with an Australian-style exit between the two laps. 

  • Bike

    From the swim exit, there's a short run to transition. Once on the bike, 90km of fast, rolling terrain lies ahead. 

  • Run

    After racking, set out on foot, crossing the dam wall, making two laps of the 10.5km course.

Cut off time

There is an overall cut-off time of 8h30 for the event.

  • Cash prizes
  • Chip timing
  • Medal


  • After completing your race, you will be congratulated with a custom event medal.
  • The event will also be chip timed so you will get accurate splits for your race.
  • There will be live commentary, music and photos as you celebrate your achievements with your friends and family.

  • Age 18 & over on 31 Dec 2023
  • Entries open
  • Enter online
Enter now

The English Championship Middle Distance Triathlon is open to all paid up members of Triathlon England. In order to be eligible for the English Championship Middle Distance Triathlon, Athletes must be current members of Triathlon England. 

Entry fees

Entry fee (Unaffiliated)


Entry fee (Affiliated)


Team entry fee


My first middle distance triathlon. Such a beautiful location. The support from marshals and event team was fantastic. Would highly recommend. | Nadia

Great event! I've taken part a few times. Really friendly support all round and everything is really straightforward. 
I like a "no-faff" race and this is great. Turn up, park on site, pick up pack, rack and go! | Michelle

Really enjoyed the event - Marshall's and stewards very incredibly helpful and friendly. Good surroundings - leafy lanes and a pretty reservoir. | Lydia

Other races at event

  • Sun 4 Jun
  • #2 of 2
Grafham Water Visitor Centre, Huntingdon

Middle Distance Aquabike



Age 18 & over

  • 1900 m lake swimming
  • 91 km road cycling