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Trail

The One on the River - Marlow - July

12 Jul 2026Marlow, 🇬🇧 United Kingdom
Distances

1.5 · 34 · 750 km +27

Races

30

Price

€29 – €127

About this event

The One on the River brings multisport racing to the Thames Valley with a proper variety of formats to suit different goals. Athletes swim in the River Thames itself, cycle through undulating countryside roads, and run alongside the scenic Thames Path where historic landmarks meet riverside greenery. Beyond the standard triathlon distances from sprint to middle, there are duathlon and aquabike options for those wanting to mix things up, plus standalone aquathlons and river swims. The setting near Marlow makes for an atmospheric course that combines open countryside with river views. With distances ranging from a 750m swim to full middle distance events, there's a challenge here for seasoned multisport athletes looking to test themselves on varied terrain.

Distances

Distances and courses for The One on the River - Marlow - July
DistanceRaceLevelPrice
1.5kmSwim 1500mBeginner€35
3kmSwim 3000mBeginner€46
5.75kmSprint AquathlonBeginner€69
11.5kmStandard AquathlonBeginner€75
21.9kmMiddle AquathlonIntermediate€92
24.75kmSprint AquabikeIntermediate€69
29.75kmSprint TriathlonIntermediate€81
34kmSprint DuathlonAdvanced€69
41.5kmStandard AquabikeAdvanced€75
51.5kmStandard TriathlonAdvanced€92
55kmStandard DuathlonAdvanced€75
92.9kmMiddle AquabikeExpert€92
112.9kmMiddle TriathlonExpert€127
116kmMiddle DuathlonExpert€98
750kmSwim 750mExpert€29

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Price

€29 – €127

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