- Wed 1 Jul 2026
18:30
Age 15 & over on 31 Dec 2026
£78
- 750 m lake swimming
- 19 km road cycling
- 5 km road running
Event overview
Take on a midweek multi-activity event at this iconic Olympic venue, featuring clear water, flat scenic grounds and a supportive atmosphere ideal for personal bests or first-timers.
Highlights
- Fast, flat course with clear-lake swim and scenic bike and run routes
- Perfect for both experienced triathletes and beginners
- Chip-timed racing for accurate results
- Supportive marshals and volunteers throughout the course
- Aquabike (swim-bike) option for those not running
- Draft-illegal race to ensure fair competition
- Set within the inspiring Dorney Lake Olympic venue
This event is part of Midweek Dorney Triathlon | July.
Event photos
- Average fitness
- Event village
- Newcomers
- Swim hat required
- Wetsuit advised
- Wetsuit not allowed if too hot
- Wetsuit required if too cold
Ability
This event is open to everyone, regardless of ability.
Wetsuit hire
Zone3 wetsuits are available to hire for the day or for the season.
- Distance markers
- First aid
- Flat
- Marshals
- PB
- Traffic free
- Way markers
- Free parking
- Secure bag storage
Event HQ
Dorney Lake
Off Court Lane, Lake End Road
Windsor
Buckinghamshire
SL4 6FJ
UK
- Chip timing
- Goody bag
- Medal
Included
Finishers will receive:
- Custom designed medal
- Finish line snacks and goodies
- Fantastic triathlon experience
Optional extras
- British Triathlon Federation Race Pass (£8)
- Wetsuit hire
- Public transport links
- 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
- Age 15 & over on 31 Dec 2026
- Entries open
- Enter online
Full details
Detailed race information including maps, details on parking, registration, baggage and start times will be e-mailed out to participants approximately 10 days before the event date.
Entry fees
Entry fee
£78.00
Other races at event
- Wed 1 Jul 2026
- #1 of 0
19:00
Age 15 & over
£58
- 400 m lake swimming
- 10 km road cycling
- 2.5 km road running
- Wed 1 Jul 2026
- #3 of 0
18:30
Age 15 & over
£68
- 750 m lake swimming
- 19 km road cycling