Dorney Lake Triathlon
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Dorney Lake Triathlon 26 July 2026
The Dorney Lake Triathlon takes place at Dorney Lake, Windsor, United Kingdom on Sunday 26 July 2026. The event supports Macmillan Cancer Support, which provides information, support and guidance for people living with cancer.
Races are offered over Super Sprint, Sprint and Standard distances. There is an Aquabike option for participants who do not wish to run, and a relay option that allows teams of two or three to share the disciplines.
The venue uses a purpose-built lake for the swim and flat grounds for the bike and run courses. Each discipline is marked with distance flags, marshals will be on course, and results are chip timed. Entries include a unique themed medal, free race photos and post race goodies. An event village offers food and drink options and on-course marshals provide guidance and encouragement. The organiser highlights sustainability as a developing priority for its events.
Distances and key course facts: Visit the organization's website for the most recent information.
- Super Sprint: 400m swim, 9.5km bike (2 laps), 2.5km run; elevation 20m; road terrain.
- Sprint: 750m swim, 19km bike (4 laps), 5km run; elevation 40m; road terrain.
- Standard: 1500m swim, 38km bike (8 laps), 10km run; elevation 80m; road terrain.
