About
This jam-packed, multi-discipline event based in Marlow offers something for every kind of athlete. With a variety of distances and triathlon, aquabike and aquathlon events on offer, participants will be able to swim, race and bike their way around the course. Come along to earn your finisher's medal and take in the scenery.Where and when
LocationHigginson Park, Marlow, High St, Marlow SL7 1AW, UKStart times
Sunday, Jul 12, 2026
Middle Distance Triathlon: 6:30 AMMiddle Distance Aquabike: 6:30 AM
Middle Distance Aquathlon: 6:30 AM
Middle Distance Duathlon: 6:45 AM
Standard Distance Triathlon: 7:30 AM
Standard Distance Aquabike: 7:30 AM
Standard Distance Aquathlon: 7:30 AM
Standard Distance Duathlon: 7:45 AM
Sprint Distance Triathlon: 8:15 AM
Sprint Distance Aquabike: 8:15 AM
Sprint Distance Aquathlon: 8:15 AM
Sprint Distance Duathlon: 8:30 AM
3000m Swim: 9:15 AM
1500m Swim: 9:15 AM
750m Swim: 9:15 AM
Event summary
Here are the distances available for The One on the River - Marlow Summer TriathlonMiddle Distance Triathlon
1.9km
91km
20km
£110
Standard Distance Triathlon
1.5km
40km
10km
£80
Sprint Distance Triathlon
0.75km
24km
5km
£70
Middle Distance Duathlon
5km
91km
20km
£85
Route information
The One on The River takes place across the scenic Thames Valley area.Swim the river, cycle the hilly open roads, or run the flat Thames path – with a mixture of grass, tarmac, and trail – taking in the views of Marlow and the surrounding areas.
What's included
- Finisher's medal
- Refreshments
- Chip timing
- Water stations
- Marked and marshalled route
