Windsor Dorney Lakeside Half Marathon 2026

The Windsor Dorney Lakeside 10K is a 10K run on a traffic-free course at Dorney Lake in Windsor, Berkshire, starting in the morning from the SL4 6QP venue area. Participants race within the grounds of an Olympic venue, not on closed city streets or country lanes. The course remains entirely within the lake site, offering flat lakeside running, no traffic, and simple logistics. The start area is accessible by car or public transport, with free parking adjacent to the venue. Local organisations and charities provide support for the event.