Dorney Triathlon | July
Sun 13 Jul 2025 Windsor, Buckinghamshire, UK

Dorney Triathlon | July

Take on a multi-activity or distance event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

5 races

  • Sun 13 Jul 2025
  • #1 of 5
Dorney Lake, Windsor

Super Sprint Triathlon

10:00

Age 15 & over

£58

  • Sun 13 Jul 2025
  • #2 of 5
Dorney Lake, Windsor

Sprint Triathlon

07:30

Age 15 & over

£78

  • Sun 13 Jul 2025
  • #3 of 5
Dorney Lake, Windsor

Standard Triathlon

08:30

Age 17 & over

£99-£120

  • Sun 13 Jul 2025
  • #4 of 5
Dorney Lake, Windsor

Sprint Aquabike

07:30

Age 15 & over

£68

  • Sun 13 Jul 2025
  • #5 of 5
Dorney Lake, Windsor

Standard Aquabike

08:30

Age 17 & over

£89

Event overview

Clear water and flat, scenic grounds lend themselves to a fast swim, bike and run course.

It's the ideal venue for a chip-timed personal best or for those who don't like racing on open roads. There will be plenty of helpers to keep you on track and encourage you all the way to the finish.

For those who don’t want to take part in the run, there is an Aquabike (swim-bike) option, and for those who would like to compete as a team, there is a relay option, with 2 or 3 individuals sharing the disciplines between them.

The flat course is ideal for a personal best over the marathon distance. A whopping 94% of 2021 participants surveyed got a PB at the Dorney Lake Marathon. The course has been measured by London Marathon course measurer Hugh Jones. Certified by UKA. This event is draft illegal. 

  • All fitness levels
  • Event village
  • Newcomers
  • Teams

Ability

This event is open to everyone, regardless of ability. 

  • Bag storage
  • Free parking

Event HQ

Dorney Lake
Off Court Lane, Lake End Road
Windsor
Buckinghamshire
SL4 6FJ
UK

  • Recycling
  • Sustainability policy

Here are the ways this event cares for the environment:

Summary

  • Recycling bins
  • Recycling gets separated from general waste
  • Finish line water bottles made from recycled material
  • Refill taps are provided so participants can bring their own bottle and fill up during the event
  • The choice of paper cups at water stations
  • Signage including course marking attached with reusable garden wire instead of plastic cable ties
  • 'Dynamic bib assignment’ removes the need for envelopes, sticker labels and excess waste
  • Bike racking is provided to promote cycling to the events

Races at event

  • Sun 13 Jul 2025
  • #1 of 5
Dorney Lake, Windsor

Super Sprint Triathlon

10:00

Age 15 & over

£58

  • Sun 13 Jul 2025
  • #2 of 5
Dorney Lake, Windsor

Sprint Triathlon

07:30

Age 15 & over

£78

  • Sun 13 Jul 2025
  • #3 of 5
Dorney Lake, Windsor

Standard Triathlon

08:30

Age 17 & over

£99-£120

  • Sun 13 Jul 2025
  • #4 of 5
Dorney Lake, Windsor

Sprint Aquabike

07:30

Age 15 & over

£68

  • Sun 13 Jul 2025
  • #5 of 5
Dorney Lake, Windsor

Standard Aquabike

08:30

Age 17 & over

£89