Dorney Lake Triathlon
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Dorney Lake Triathlon July 2026
The event takes place on Sunday 12 July 2026 at Dorney Lake in Windsor, UK. It offers multiple race formats: Super Sprint, Sprint and Standard triathlons, plus aquabike options and relay entries that allow two or three people to share the disciplines.
The venue features a purpose built lake used for Olympic competition and flat grounds for the bike and run. Each discipline is marked with distance flags and marshals are present to guide participants. Courses are on road terrain with low total elevation for each distance.
Included with entry are a unique themed medal, free race photos, chip timed results and post race goodies. An event village provides food and drink options and partner provided freebies at the finish.
Race course details
- Super Sprint Triathlon: 400m swim, 9.5km bike 2 laps, 2.5km run. Elevation 20m. Terrain road.
- Sprint Triathlon: 750m swim, 19km bike 4 laps, 5km run. Elevation 40m. Terrain road.
- Standard Triathlon: 1500m swim, 38km bike 8 laps, 10km run. Elevation 80m. Terrain road.
The event is chip timed and organised with marshals and marked routes to support navigation around the course. Visit the organization's website for the most recent information.
