ATW Grafham Triathlon

SEP
26
2026
Challenge yourself at the ATW Grafham Triathlon on 26 September 2026, with Sprint and Standard distances set around a scenic Grafham Water swim, a flat fast bike and looped 5k run across the dam. Aquabike and relay entries welcome.
Sat 26 Sep 2026
Sprint Distance Triathlon... Standard Distance Triathl...

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ATW Grafham Triathlon : event overview

The event takes place on 26/09/2026 at Grafham Water Visitor Centre, Marlow Park, Grafham, Huntingdon, Cambs, PE28 0BH. The organiser, ATW, was established in 2011 and runs national multisport events, with over 40,000 entries a year.

Distances

  • Standard - swim 1500m, cycle 38km, run 10km
  • Sprint - swim 750m, cycle 17km, run 5km

Course, options and logistics

The swim is in Grafham Water reservoir on a 750m loop. The Sprint completes one swim lap; the Standard completes two. The bike is a flat out-and-back course. The Sprint turns in the village of Perry; the Standard turns in the town of St Neots. The run uses laps of a 5k route on natural footpaths, crosses the dam wall, and passes the finish and transition area. The Sprint finishes after one run lap; the Standard after two.

Options include a Standard distance Aquabike (swim-bike) and a Standard distance relay with two or three athletes sharing disciplines. Wetsuit hire and short-term wetsuit rental are available. Camping and dormitory-style accommodation options are offered for the night before the event. Parking is available on site with charges payable at ticket machines. The event lists Alzheimer’s Research UK as a charity partner. The organiser does not offer refunds or transfers to another person but allows entry transfers to future ATW events up to 48 hours before the event. Visit the organization's website for the most recent information.

38 km
Standard Distance Triathlon - Swim 1500m, Cycle 38km, Run 10km
17 km
Sprint Distance Triathlon - Swim 750m, Cycle 17km, Run 5km

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