Run Dorney Lake Half Marathon - January

Chase a personal best on the hallowed ground of Olympic champions at Run Dorney Lake Half Marathon, 10k & 5k near Windsor on Sunday, January 18, 2026. This perfectly organized RunThrough event takes place on the iconic, pancake-flat course that hosted London 2012's rowing events, offering an unrivaled opportunity for fast times across all distances. The scenic, traffic-free loop around the pristine lake provides a serene yet energizing winter backdrop, with each kilometer accurately marked and enthusiastic marshals offering support from start to finish. Participants can choose from a 5k, 10k, or half marathon, all benefiting from professional chip timing, free race photos, and a unique themed medal, with the option to purchase a commemorative event T-shirt. Known for its friendly atmosphere and well-stocked event village, it's the ideal early-year goal for both seasoned runners aiming for a PB and newcomers experiencing their first organized race. Prepare for a crisp morning where Olympic history, beautiful Berkshire scenery, and your own personal triumph beautifully converge.