Dorney Lake Triathlon
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Dorney Lake Triathlon - 8 August 2026
The Dorney Lake Triathlon takes place on 8 August 2026 at Dorney Lake, Windsor, United Kingdom. The event is organised by RunThrough and lists Macmillan Cancer Support as a partner and beneficiary.
The venue features a purpose built lake for the swim and flat grounds for the bike and run, with courses held on road surfaces. The event uses chip timed results and provides a themed medal, free race photos and post race goodies as part of entry. Marshals will be present around the course and an event village will offer food and drink options.
Options include individual and team formats. There is an aquabike option for participants wishing to complete swim and bike only, and a relay option that allows two or three people to share disciplines.
Distances by event
- Super Sprint: 400 m swim, 9.5 km bike (2 laps), 2.5 km run
- Sprint: 750 m swim, 19 km bike (4 laps), 5 km run
- Standard: 1500 m swim, 38 km bike (8 laps), 10 km run
Each course lists elevation and road terrain. The organiser notes an ongoing focus on sustainability and includes event partner provisions and membership entry conditions. Visit the organization's website for the most recent information.
