Dorney Lake Triathlon
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Dorney Lake Triathlon, 6 June 2026
The event takes place at Dorney Lake, Windsor, United Kingdom, and supports Macmillan Cancer Support. Macmillan is the RunThrough Triathlon Partner for 2026 and provides information, support and guidance to people living with cancer.
Participants can choose from multiple race formats and relay entries. Distances are clearly marked and the venue uses chip timing for results.
- Super Sprint: 400m swim, 9.5km bike (2 laps), 2.5km run; elevation 20m; road.
- Sprint: 750m swim, 19km bike (4 laps), 5km run; elevation 40m; road.
- Standard: 1500m swim, 38km bike (8 laps), 10km run; elevation 80m; road.
There is an Aquabike option for swim and bike only, and relay entries that allow two or three individuals to share the disciplines. The course uses a purpose built lake for the swim and largely flat ground for bike and run sections. Each discipline will be marked with distance flags and event staff and marshals will be present to guide competitors.
Entry includes a themed medal, free race photos, chip timed results and post race goodies. The site will feature an event village with food and drink options and partner giveaways. Visit the organization's website for the most recent information.
