River Thames Half Marathon

The River Thames Half Marathon 2025 is a scenic, flat, and largely traffic-free race held in Walton-on-Thames, Surrey, on October 26th. The course follows the River Thames towpath from Walton Bridge to Hampton Court Bridge, offering runners beautiful views of the non-tidal river. The event is suitable for those aiming for a personal best or completing their first half marathon.

Participants receive a bespoke medal, a goody bag, and free race photos. The race is well-organized, with enthusiastic marshals and accurate chip timing, making it an ideal warm-up for autumn marathons like New York or Florence. Entry fees start at £34. Visit the organization's website for the most recent information.