ATW Grafham Duathlon
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Event details
The ATW Grafham Duathlon takes place on 26 October 2025 at Grafham Water Visitor Centre, Marlow Park, Grafham, Huntingdon, Cambs. The event organiser runs multiple multisport events and reports hosting over 40,000 participants annually. Accommodation is available at the Grafham Water centre the night before the event. Car parking is available at the venue with parking fees payable to Anglian Water. The event lists Alzheimer’s Research UK as a charity partner. Entry policy: no refunds or transfers to another person; entries can be transferred to a future ATW event up to 48 hours before the original event date.
Course and race information
Distances offered:
- Standard Duathlon - Run 10km, Cycle 38km, Run 5km
- Sprint Duathlon - Run 5km, Cycle 17km, Run 2.5km
The first run uses a new 2.5 km lap that crosses the Grafham Water dam wall and returns near the finish area. The bike course is an out-and-back route towards St Neots with few turns; the sprint distance turns back in the village of Perry. The races are draft-illegal. British Triathlon Motor Officials are listed for safety and fairness. For athletes aiming to qualify for the European Championship Standard Duathlon, intent to qualify must be registered by 5pm on the Friday before the qualifying race; late registrations do not count. Visit the organization's website for the most recent information.