Dorney Lake Triathlon
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Event overview
The Dorney Lake Triathlon takes place at Dorney Lake in Windsor, UK on Saturday 6 June 2026. The event offers multiple race formats including individual triathlons, relay options and aquabike entries. Entry fees range from £58 to £120 depending on the race. Entries include a themed medal, free race photos, chip-timed results and post-race goodies. The venue is an Olympic site with a purpose-built lake and flat grounds; organisers describe the bike and run courses as on road and flat. Marshals will be present on course and there will be an event village with food and drink options and partner giveaways.
Course details
The event offers Super Sprint, Sprint and Standard distances, plus relay and aquabike options. Relays may be entered by teams of 2 or 3 people. All courses are on road and lap-based for the bike. Visit the organization's website for the most recent information.
- Super Sprint Triathlon: 400m swim, 9.5km bike (2 laps), 2.5km run - Elevation 20m
- Sprint Triathlon: 750m swim, 19km bike (4 laps), 5km run - Elevation 40m
- Standard Triathlon: 1500m swim, 38km bike (8 laps), 10km run - Elevation 80m