Dorney Lake Triathlon

JUN

6

2026

Race at Dorney Lake in Windsor on a purpose built lake with flat bike and run courses ideal for fast times. Choose sprint to standard distances, earn a themed medal, get free photos and enjoy the event village.

Sat 6 Jun 2026

Windsor, South East (England)

Registration

Sprint Aquabike Sprint Relay Sprint Triathlon Standard Aquabike Standard Relay

Always double-check with the organizer's website! This page may contain affiliate links.

Event overview

RunThrough UK stages the Dorney Lake Triathlon at Dorney Lake, Windsor, UK on Saturday 6 June 2026. The venue uses the purpose-built lake for the swim and has flat grounds for the bike and run courses. Entries include a themed medal, free race photos, chip-timed results and post-race goodies. Marshals guide participants around the course and an event village provides food and drink options. The organiser highlights sustainability as a priority.

Race distances and course

Super Sprint Triathlon: 400m swim, 9.5km bike, 2.5km run
Sprint Triathlon: 750m swim, 19km bike, 5km run
Standard Triathlon: 1500m swim, 38km bike, 10km run

Course elevations and terrain: Super Sprint elevation 20m; Sprint elevation 40m; Standard elevation 80m. Bike and run terrain is road. The bike laps are noted as 2, 4 and 8 laps respectively for Super Sprint, Sprint and Standard.

There are also Aquabike (swim-bike) options and relay options. Relays may be completed by teams of two or three individuals. Entry fees listed for available races range from £58 to £120. Visit the organization's website for the most recent information.