Dorney Evening Triathlon — 1st July 2026

The Dorney Evening Triathlon (part of the Dorney Triathlon series) is staged within the grounds of Dorney Lake, Windsor, and is promoted by Dorney Lake Events in partnership with RunThrough/ATW Events. The venue uses the purpose-built rowing lake for the swim and offers flat, fast bike and run circuits that are described as ideal for chasing personal bests. The event listing for 1 July 2026 is published on the official Dorney Triathlon site and is presented as an evening-format triathlon; the series course text confirms the swim follows a 750m loop and the bike and run remain flat within the lake grounds.

Specific wave start times, the exact distances offered for this evening date (sprint, standard or both), entry fees and detailed race-day logistics are not stated on the event page and are therefore not included here. Entrants are directed to the event registration page, the event guide and the official FAQ on the Dorney Triathlon site for race pack, licence and timing requirements. The event supports the Younger People With Dementia (YPWD) charity and is part of the wider Dorney Lake triathlon calendar promoted by Dorney Lake Events / RunThrough.