Eton Dorney Family Triathlon

JUL
19
2026
Experience a safe and flat triathlon at the iconic Dorney Lake with distances for the whole family. Enjoy closed road racing and open water swimming in a stunning traffic free environment suitable for all ages.
Sun 19 Jul 2026
Tristar Start Run Tristar 1 Run Youth Triathlon Run Tristar 3 Run Tristar 2 Run

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Eton Dorney Family Triathlon

The Eton Dorney Family Triathlon takes place at Dorney Lake in Windsor, providing a closed road environment for multisport racing. The event features junior racing alongside adult sprint distances, utilizing a flat and traffic-free course suitable for various skill levels.

Participants compete in an open water swim within Dorney Lake, followed by a bike leg on wide tarmac roads and a run on a spectator-friendly course. The venue is entirely contained, ensuring a safe setting away from public traffic for all athletes.

The event offers several individual and team categories for different age groups:

  • Sprint Triathlon: 750m swim, 19.5km bike, 5km run (Ages 15+)
  • Sprint Relay: 750m swim, 19.5km bike, 5km run (Ages 15+)
  • Super Sprint: 400m swim, 9.75km cycle, 2.5km run (Ages 15+)
  • Youth: 400m swim, 10km cycle, 2.4km run (Ages 15-16)
  • TriStar 3: 300m swim, 5km cycle, 2.4km run (Ages 13-14)
  • TriStar 2: 200m swim, 5km cycle, 1.8km run (Ages 11-12)
  • TriStar 1: 150m swim, 3km cycle, 1.2km run (Ages 9-10)
  • TriStar Start: 100m swim, 1.5km cycle, 600m run (Age 8)
  • Family Fun Triathlon: Non-competitive option (Ages 7+)

The flat terrain of the bike course and the visibility for spectators around the run loops make it an accessible venue for both competitors and those watching the race. Visit the organization's website for the most recent information.

5 km
Sprint Relay Triathlon Run
5 km
Sprint Triathlon Run
Super Sprint Triathlon Run
Youth Triathlon Run
Tristar 3 Run
Tristar 2 Run
Tristar Start Run
Tristar 1 Run
Family Fun Triathlon