This event has ended

Trail

The One on the River - Autumn Henley

20 Sept 2026Marlow, 🇬🇧 United Kingdom
Distances

1.5 · 55.5 · 750 km +15

Races

18

Price

€29 – €127

About this event

The One on The River brings multi-sport racing to the scenic Thames Valley near Henley. The event centres around an open-water swim in the River Thames, followed by bike routes through rolling countryside and a run across the historic Culden Faw Estate. The swim distances range from 750m to 3km, with triathlon and aquabike options spanning sprint to middle distance. The bike course tackles hilly open roads, while the run winds through peaceful woodland trails and estate grounds. It's a well-rounded challenge set in one of England's most picturesque corners, where natural beauty meets classic countryside terrain.

Distances

Distances and courses for The One on the River - Autumn Henley
DistanceRaceLevelPrice
1.5kmSwim 1500mBeginner€35
3kmSwim 3000mBeginner€46
30.75kmSprint AquabikeAdvanced€69
40.75kmSprint TriathlonAdvanced€81
55.5kmStandard AquabikeAdvanced€75
65.5kmStandard TriathlonAdvanced€92
80.4kmMiddle AquabikeExpert€92
100.4kmMiddle TriathlonExpert€127
750kmSwim 750mExpert€29

Find the races you'd actually enter

Free. Takes a minute.

  • Connect Strava — see races that match what you run
  • Create a group and plan this race together
  • Share a ride to the start line
  • Save it and track your season
Join Chamoix — it's freeAlready have an account? Log in
Price

€29 – €127

Past event