Henley River Half Marathon, 10k & Junior Race | September 2026

The Henley River Half Marathon, 10K & Junior Race begins and ends at Remenham Farm in Henley-on-Thames, situated by the Thames and at the Royal Henley Rowing Regatta's launch point. This September event offers adults a half marathon or 10K option, alongside a distinct junior race for those under 11. The course features mixed terrain, with some fast sections and rolling hills rather than being entirely flat. The half marathon consists of one mini lap followed by two full laps. The 10K is a single lap, and the junior race follows an out-and-back format. Trail flags and A5 arrows indicate the route, with marshals directing participants to the finish. Entry provides chip-timed results, a themed medal, complimentary race photos, and post-race treats, catering to club runners aiming for a specific time, casual runners seeking a Thames-side event, and families accompanying younger participants.