River Thames Half Marathon
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River Thames Half Marathon 2025
The River Thames Half Marathon takes place on Sunday 26 October 2025 in Walton-on-Thames and Weybridge, Surrey. The event is a half marathon with the start and finish at Walton Bridge (Walton-on-Thames, KT12 1BT). The route follows the River Thames towpath from Walton-on-Thames to Hampton Court Bridge and returns along views of the non-tidal River Thames. The course is described as flat and largely traffic free. The 2025 race is the sixth running of the event.
Entry, race services and notes
Entry starts from £34, including the registration fee. Race services include accurate chip timing, free race photos, a medal, and a goody bag. A personalised race certificate with finish time is available to download after the event. The race is held under Run England race licence rules and is promoted as a useful warm-up event for later autumn marathons such as New York, Valencia and Florence. Visit the organization's website for the most recent information.
