Dorney Lake Triathlon

RunThrough’s Dorney Lake Triathlon takes place at the purpose-built Dorney Lake in Windsor, Berkshire, an Olympic venue renowned for its flat, fast courses. The event offers Super Sprint, Sprint, and Standard triathlons, plus sprint/standard relays and aquabikes. Distances are 400m swim, 9.5km bike, 2.5km run (Super Sprint); 750m/19km/5km (Sprint); 1500m/38km/10km (Standard).

The course is marked with distance flags and supported by marshals to keep athletes on track, with a flat bike and run suitable for personal bests. Highlights include a lively event village, themed medals, free race photos, post-race goodies, and a focus on sustainability. Participants enjoy a supportive atmosphere with marshals cheering them on and spectators around the village. Visit the organization's website for the most recent information.