Dorney Lake Triathlon

AUG

2026

Join the Dorney Lake Triathlon in Windsor on 8 August 2026. Choose Super Sprint, Sprint, Standard, relays or aquabike on a fast flat course around a purpose built lake, with themed medal, free photos and chip timed results.

Sat 8 Aug 2026

Windsor, South East (England)

Registration

Sprint Aquabike Sprint Relay Sprint Triathlon Standard Aquabike Standard Relay

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Event details

The Dorney Lake Triathlon takes place on Saturday 8 August 2026 at Dorney Lake, Windsor, Berkshire. The event is organised by RunThrough UK and offers multiple race formats: Super Sprint, Sprint, Standard, sprint and standard relays, and sprint and standard aquabike. The venue uses a purpose-built lake for the swim and a flat, road-surface bike and run course. Results are chip timed. Entries are listed from £58 to £120. Included with entry are a themed medal, free race photos, chip-timed results and post-race goodies. Marshals and course signage will be in place to guide participants. Visit the organization's website for the most recent information.

Distances

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.
Sprint Relay: 2 or 3 people sharing Sprint distances.
Standard Relay: 2 or 3 people sharing Standard distances.
Sprint Aquabike: swim and bike only, Sprint distances.
Standard Aquabike: swim and bike only, Standard distances.