Dorney Lake Triathlon
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Event overview
The Dorney Lake Triathlon takes place on Saturday 2 May 2026 at Dorney Lake, Windsor, Berks. The event uses the purpose-built lake for the swim and road surfaces for the bike and run. Each discipline is marked with distance flags and marshals will be on course to guide participants. Entries include a themed medal, free race photos, chip-timed results, and post-race goodies.
Course and entries
Race options include Super Sprint, Sprint and Standard triathlon distances, plus relay and aquabike options. Aquabike covers swim and bike only. Relays may be split between two or three individuals. Typical entry fees range from £58 to £150 depending on race and charity places.
- 400m swim | 9.5km bike - 2 Laps | 2.5km run
- 750m swim | 19km bike - 4 Laps | 5km run
- 1500m swim | 38km bike - 8 Laps | 10km run
Elevation is listed as 20m for the Super Sprint, 40m for the Sprint and 80m for the Standard. Terrain for all listed race distances is road. The event is chip timed and kilometre markers are provided on course. Visit the organization's website for the most recent information.
