Sprint
750 m swim · 24 km bike · 5 km runEntry from £70
- CourseLaps
- SurfaceRoad
- Run terrainmixed grass, tarmac and trail Thames path
- SwimRiver
- Aid stationsone water station each on the bike and run courses
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Marlow · MAY 2026 · Independent
Data current as ofAround race day in Marlow: 23°C typical, 5.1 mm rain, 21 km/h wind. (10-year Open-Meteo average.)
Entry from £70
Entry from £80
Entry from £110
One on the River - Marlow currently lists Sprint (750 m swim · 24 km bike · 5 km run); Olympic (1,500 m swim · 40 km bike · 10 km run); Middle (70.3) (1,900 m swim · 91 km bike · 20 km run) on raceindex.org.
Use the linked official event website alongside the raceindex.org provenance and methodology notes shown on this page.