Dorney Lake Triathlon

The Dorney Lake Evening Triathlon, held on August 27, 2025, takes place at the Olympic venue of Dorney Lake in Windsor, UK. Participants can choose from Super Sprint, Sprint, or Aquabike (swim-bike) distances, featuring a 400m or 750m swim in the purpose-built lake, flat bike courses of 10km or 20km, and runs of 2.5km or 5km on flat terrain. The event offers chip timing, distance markers, and supportive marshals to guide athletes.

Entrants receive a unique themed medal, free official photos, and post-race goodies. The flat course and scenic setting make it ideal for personal bests in a friendly, well-organized atmosphere. Visit the organization's website for the most recent information.