River Thames Half Marathon

The River Thames Half Marathon is a scenic and fast half marathon held in the beautiful Surrey towns of Walton-on-Thames and Weybridge. Scheduled for October 26, 2025, the race features a flat, largely traffic-free course along the River Thames towpath, from Walton-on-Thames to Hampton Court Bridge, offering picturesque views of the non-tidal river. Ideal for both first-timers and those aiming for a personal best, the event is well-organized with enthusiastic marshals, accurate chip timing, a bespoke medal, and a well-stocked goody bag.

The start and finish are at Walton Bridge, making it a perfect warm-up for autumn marathons like New York or Valencia. Visit the organization's website for the most recent information.