Dorney Triathlon 26th September 2026 | Sprint & Standard distance

The Dorney Triathlon 26th September 2026 is staged at Dorney Lake, the purpose-built Olympic rowing venue near Windsor, and offers Super Sprint, Sprint and Standard distances for a broad range of abilities. The event is promoted by Dorney Lake Events in partnership with RunThrough and takes place entirely within the flat, secure grounds of the lake, making it popular for personal-best attempts. Swim courses use the lake, with completely flat bike and run loops around the venue; entries include chip timing, an event medal and official race photography. Wave start times are published on the event page and are noted as "subject to change" so entrants should check final briefing information before race day.

The race day features an event village with food and drink provision and free parking adjacent to the venue, plus marshals and live timing provided by Event Chip Timing. Relay and Aquabike options are available alongside solo triathlon entries, and entrants must hold British Triathlon membership or purchase a single-use Race Pass as required by British Triathlon. Course maps, athlete guides and FAQ documents are available from the event website and the organiser's event guide PDFs for detailed logistics, age limits and technical rules. For travel and ticket enquiries the organiser contact is provided on the event page and confirmation email information is sent to entrants after registration.