Join us for the Dorney Lake Triathlon on 3rd October 2026 Race at an iconic Olympic venue with calm open water and flat, traffic-free laps beside the lake. Choose Super Sprint or Standard and enjoy smooth organisation, clear wayfinding, and supportive marshals from the first stroke to the finish. The purpose-built lake sets you up for a confident swim. Wide roads and paths create a totally flat bike and run course, ideal for accurate pacing and chip-timed personal bests. Prefer a swim-bike day or want to race as a team? Enter the Aquabike or take on the relay with friends.
See it on the map, check who's going and RSVP — free on iPhone.
Open in the JOG app Download on the App Store