Sun 21 Sep 2025 Henley-on-Thames, Buckinghamshire, UK
The One on the River | Henley | Middle Distance Triathlon
Taking place across the scenic Thames Valley area with routes going through Culden Faw Estate. Swim the river, cycle the hilly open roads, run through the trail paths enjoying great views.
- Sun 21 Sep 2025
Henley Showground, Henley-on-Thames
Triathlon | Middle
07:00
Age 17 & over on 31 Dec 2025
£110
- 1900 m river swimming
- 78.5 km road cycling
- 20 km trail running
Event overview
A special multi-activity weekend with something for everyone.
Enjoy the views of Henley-on-Thames and the surrounding areas.
This is the One Race that you do not want to miss.
Highlights
- Your favourite sport, with a new touch
- Scenic event venue
- Unforgettable route
- Caring team of sports enthusiasts
- Fully sustainable, zero-waste event
- Professional sports timing
- Extra entertainment during the weekend
This event is part of The One on the River | Henley.
Event details
- All fitness levels
- Event village
- Newcomers
- Spectators
- Swim hat provided
Route
- Distance markers
- First aid
- Marshals
- No headphones
- Water stations
- Way markers
Location
- Park
- Toilets
What's included
- Chip timing
- Map
- Medal
- Race photo
Sustainability
- Recycling
- Sustainability policy
How to enter
- Age 17 & over on 31 Dec 2025
- Enter online
Other races at event
- Sun 21 Sep
- #1 of 0
Henley Showground, Henley-on-Thames
Triathlon | Sprint
08:45
Age 17 & over
£65
- 750 m river swimming
- 30 km road cycling
- 5 km trail running
- Sun 21 Sep
- #2 of 0
Henley Showground, Henley-on-Thames
Triathlon | Standard
08:00
Age 17 & over
£75
- 1500 m river swimming
- 54 km road cycling
- 10 km trail running
- Sun 21 Sep
- #4 of 0
Henley Showground, Henley-on-Thames
AquaBike | Sprint
08:45
Age 17 & over
£50
- 750 m river swimming
- 30 km road cycling
- Sun 21 Sep
- #5 of 0
Henley Showground, Henley-on-Thames
AquaBike | Standard
08:00
Age 17 & over
£55
- 1500 m river swimming
- 54 km road cycling
- Sun 21 Sep
- #6 of 0
Henley Showground, Henley-on-Thames
AquaBike | Middle
07:00
Age 17 & over
£80
- 1900 m river swimming
- 78.5 km road cycling
- Sun 21 Sep
- #7 of 0
Henley Showground, Henley-on-Thames
Swim | 750M
09:45
Age 17 & over
£25
- 750 m river swimming
- Sun 21 Sep
- #8 of 0
Henley Showground, Henley-on-Thames
Swim | 1500M
09:45
Age 17 & over
£30
- 1500 m river swimming
- Sun 21 Sep
- #9 of 0
Henley Showground, Henley-on-Thames
Swim | 3000M
09:45
Age 17 & over
£40
- 3000 m river swimming