Dorney Triathlon
Dorney Triathlon September 2025, hosted by RunThrough UK, takes place at Dorney Lake near Windsor, UK, offering Super Sprint, Sprint and Standard triathlons (and relay and aquabike options). The purpose-built lake provides a controlled swim, with a flat bike and run course ideal for personal bests. Distances include 400m swim/10km bike/2.5km run (Super Sprint), 750m/19km/5km (Sprint), and 1500m/38km/10km (Standard).
The event emphasizes a supportive atmosphere with course marking, chip-timed results, post-race goodies, and free official race photos. The venue is a famous Olympic site; sustainability initiatives are highlighted by the organizers. Aquabike and relay options are also available. Visit the organization's website for the most recent information.
Always double-check with the organizer's website – things can change, and we might have sprinted past a few details!
