Dorney Lake Triathlon
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Event overview
The Dorney Lake Triathlon takes place on Saturday 26 September 2026 at Dorney Lake, Windsor, UK. The event is organised by RunThrough UK and offers individual and team formats, including relay teams of two or three and Aquabike (swim-bike) options. The swim takes place in the purpose-built lake; the bike and run use flat road terrain around the venue. The course will be marked with distance flags and marshals will be present to guide participants. Entries include a themed medal, free race photos, chip-timed results, and post-race goodies. An event village will provide food and drink options and partner giveaways.
Race distances and entries
- Super Sprint: 400m swim, 9.5km bike (2 laps), 2.5km run. Elev 20m.
- Sprint: 750m swim, 19km bike (4 laps), 5km run. Elev 40m.
- Standard: 1500m swim, 38km bike (8 laps), 10km run. Elev 80m.
Entry fees listed range from £58 to £120 depending on race type and format. Visit the organization's website for the most recent information.
