The One for the Planet - Dorney Lake Triathlon
Set at the spectacular, flat, and smooth-surfaced Dorney Lake near Windsor, this is one of the UK's most exciting multisport festivals, launched in 2023. The event includes a shopping village, food and drink stands, and a DJ. Spectators can enjoy views from the water, boathouse, and Olympic bridge!
DATE: June 14, 2026
LOCATION: Dorney Lake, Windsor
Races & Distances
Triathlon
- Standard: 1500m Swim / 40k Bike / 10k Run - £80
- Sprint: 750m Swim / 20k Bike / 5k Run - £70
- Super Sprint: 400m Swim / 10k Bike / 2.5k Run - £60
Multisport (Duathlon, Aquabike, Aquathlon)
- Standard: £65
- Sprint: £60
- Super Sprint: £60
Swim Only
- 3000m - £40
- 1500m - £30
- 750m - £25
Run Only
- 15k - £30
- 10k - £26
- 5k - £26
Tri for the Planet
Take part in The One for the Planet event to help restore the planet through your run and have a great day out. To remove plastic from the ocean with your participation, download the Climategames App, sync your wearable and join the event. Only participants who download Climategames will be able to make their activity matter for the planet!
Event Information
Race Pack Collection: Timing chip, bib number, and bike/helmet stickers available on event day from 06:45 AM at the Registration Tent. No mail delivery.
Transition Area: Opens at 06:45 AM. Requires event number and bike sticker for entry.
Course: Marked and marshalled swim, bike, and run courses. Interactive route maps are available online.
Entry Includes: Finisher Medal (sustainable wooden design), Refreshments, Chip Timing.
Facilities: Portable toilets available in the event village. No dedicated changing rooms or showers.
British Triathlon Membership/Race Pass: Required for participants under British Triathlon rules.
Village Location: Dorney Lake Boathouse, Court Ln, Dorney, Windsor, SL4 6QP. Follow event signage on arrival.
