Dorney Lake Triathlon
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Event overview
The Dorney Lake Triathlon takes place on Saturday 2 May 2026 at Dorney Lake, Windsor, UK. The event is organised by RunThrough UK and offers multiple individual and team formats on a purpose-built rowing lake and surrounding roads. Entry fees for the listed races range from £58 to £120. The venue uses a flat road course with low elevation figures provided for each distance.
Race distances and formats
- Super Sprint: 400m swim, 9.5km bike (2 laps), 2.5km run; elevation 20m
- Sprint: 750m swim, 19km bike (4 laps), 5km run; elevation 40m
- Standard: 1500m swim, 38km bike (8 laps), 10km run; elevation 80m
Relay and Aquabike options are also available. Relay entries allow 2 or 3 people to share the swim, bike and run disciplines. Aquabike entries include the swim and bike only.
Entry services and course notes
Entries include a themed medal, free race photos, chip-timed results and post-race goodies. The bike and run routes are on road surfaces and are marked with distance flags. The event features marshals and an event village with food and drink options and partner giveaways. Visit the organization's website for the most recent information.
