Dorney Evening Triathlon — August 2026

The Dorney Evening Triathlon — August 2026 is an evening, midweek triathlon held at Dorney Lake, an Olympic-standard rowing venue near Windsor. The event offers sprint and super-sprint formats and an aquabike option, all run from a single 18:30 evening start. The venue provides a purpose-built flat lake swim and flat, PB-friendly bike and run circuits that are largely traffic-free, making it suitable for fast times and good spectator viewing. The event is chip-timed (Event Chip Timing) and includes a themed finisher medal with free official event photos; results are published live online.

Organised by Dorney Lake Events (the site shows RunThrough as a partner/owner), the evening triathlon includes an event village with food and drink and free parking adjacent to the village. Competitors must hold British Triathlon membership or purchase a single-use Race Pass. Practical operational details (age categories, cut-offs, transfer/refund rules) are not listed on the main event page and entrants are advised to consult the organiser FAQ or contact the organiser. The organiser page links to route maps and venue information; on-race provisions include course marshals, clear distance flags, toilets a short walk from transition and a small-bag policy in transition rather than a formal baggage-drop.