Dorney Lake Triathlon

JUL

12

2026

Take on the flat, fast Dorney Lake Triathlon in Windsor on 12 July 2026 with Super Sprint, Sprint and Standard options plus Aquabike and relays. Chip timed race with a themed medal, free photos, goodies and a lively event village.

Sun 12 Jul 2026

Windsor, South East (England)

Registration

Sprint Relay Standard Relay Sprint Aquabike Sprint Triathlon Standard Aquabike

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Event overview

The Dorney Lake Triathlon takes place at Dorney Lake, Windsor, UK, on Sunday 12 July 2026. The venue features a purpose-built lake for the swim and flat grounds for a flat bike and run course. The event is chip timed and provides a themed medal, free race photos, and post-race goodies. Marshals will guide participants around the course and there will be an event village with food and drink options.

Race distances

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

There are also Aquabike options (swim and bike only) and relay options that allow 2 or 3 people to share the disciplines.

Elevation for the courses is given as 20 m for Super Sprint, 40 m for Sprint, and 80 m for Standard. All listed course terrain is on road. Entry fees vary by event from £58 to £120. Visit the organization's website for the most recent information.