Dorney Lake Duathlon

RunThrough UK’s Dorney Lake Duathlon takes place at Dorney Lake, Windsor, UK, set on an Olympic venue known for its flat, scenic grounds. The event offers Super Sprint (2.5km run, 9.5km bike on two laps, 2.5km run), Sprint (5km run, 19km bike on four laps, 2.5km run), and Standard Duathlon (10km run, 38km bike on eight laps, 5km run), plus relay options for teams of two or three. The bike and run courses are road-based and notably flat, with distance flags and plenty of marshals.

Participants enjoy a lively event village, free race photos, themed medals, post-race goodies, and a sustainability focus. Visit the organization's website for the most recent information.