The One on the River - Henley

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From onerace events

  • Date Sun 21st September 2025
  • Time 08:00
  • Location Henley-on-Thames, Oxfordshire
  • Price £25.00 - £110.00
  • Races 9 races
  • Distances Super Sprint, Sprint, Olympic, Middle Distance / 70.3

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Two athletes wearing medals and race bibs are smiling and standing together at a finish line. The man on the right holds a trophy. They are outdoors on a sunny day with banners and green trees in the background.

The One on the River - Henley

Sun 21st September 2025

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Event summary

Get ready for an exhilarating day of athleticism and adventure at The One on the River - Henley! Organized by Onerace Events, this exciting multi-sport event will take place on Sunday, September 21st, 2025, in the picturesque setting of Henley-on-Thames, Oxfordshire.

Participants can look forward to a thrilling challenge that includes swimming in the stunning Thames River, cycling along the hilly open roads, and running through enchanting trail paths, all while soaking in the breathtaking views of the scenic Thames Valley and the beautiful Culden Faw Estate. Whether you're a seasoned athlete or a first-time participant, The One on the River promises an unforgettable experience filled with camaraderie and competition. Don't miss your chance to be part of this remarkable event!

The One on the River - Henley

Sun 21st September 2025

Two athletes wearing medals and race bibs are smiling and standing together at a finish line. The man on the right holds a trophy. They are outdoors on a sunny day with banners and green trees in the background. Two smiling women in wetsuits and swim caps stand outdoors, holding medals around their necks. They appear to be celebrating after a swimming event. One holds a banana and a drink. Trees and a building are visible in the background. Four men wearing athletic gear and medals stand together smiling in front of a colorful race banner. They're on a grassy field with trees in the background, celebrating after finishing a race.

Organiser's Description

The One on The River - Henley takes place across the scenic Thames Valley area with its routes going through Culden Faw Estate.
​Swim the river, cycle the hilly open roads, or run through the trail paths enjoying the views of Henley-on-Thames and the surrounding areas.

Races

  • Triathlon - Middle Distance

    £110.00

    Booking for more than 1?

  • Triathlon - Standard

    £75.00

    Booking for more than 1?

  • Triathlon - Sprint

    Sun 7th September 2025 (00:00)

    £65.00

    Booking for more than 1?

  • Aquabike - Standard

    Sun 7th September 2025 (00:00)

    £55.00

    Booking for more than 1?

  • Aquabike - Sprint

    Sun 7th September 2025 (00:00)

    £50.00

    Booking for more than 1?

  • Aquabike - Middle Distance

    £80.00

    Booking for more than 1?

  • Swim - 3000m

    Sun 7th September 2025 (00:00)

    £40.00

    Booking for more than 1?

  • Swim - 1500m

    Sun 7th September 2025 (00:00)

    £30.00

    Booking for more than 1?

  • Swim - 750m

    Sun 7th September 2025 (00:00)

    £25.00

    Booking for more than 1?

Book

  • Triathlon - Middle Distance

    £110.00

    Booking for more than 1?

  • Triathlon - Standard

    £75.00

    Booking for more than 1?

  • Triathlon - Sprint

    Sun 7th September 2025 (00:00)

    £65.00

    Booking for more than 1?

  • Aquabike - Standard

    Sun 7th September 2025 (00:00)

    £55.00

    Booking for more than 1?

  • Aquabike - Sprint

    Sun 7th September 2025 (00:00)

    £50.00

    Booking for more than 1?

  • Aquabike - Middle Distance

    £80.00

    Booking for more than 1?

  • Swim - 3000m

    Sun 7th September 2025 (00:00)

    £40.00

    Booking for more than 1?

  • Swim - 1500m

    Sun 7th September 2025 (00:00)

    £30.00

    Booking for more than 1?

  • Swim - 750m

    Sun 7th September 2025 (00:00)

    £25.00

    Booking for more than 1?

Course Details

All swim, bike and run courses are marked with signs and well marshalled.

Based on the distance you are completing you will be required to do a particular number of laps at each leg.

What's Included

- Chip Timing
- Finisher Medal
- Refreshments & Snacks
- Photos

How to Get There

What3Words: ///logic.premature.lives

Location

Event village in situated in Henley Showground, Hambleden, Henley-on-Thames, RG9 3AS
On arrival to the site please follow the event signage.
What3Words: ///logic.premature.lives

on the day

Race Pack Collection
Your timing chip, bib number and bike/helmet stickers will be available for collection on the event day from 06:00am. These will be ready for you to collect from Registration Tent, which will be located between the river and transition.

Depending on the event discipline you are competing in, you will be supplied with the following:
· timing chip (to be worn on your left ankle);
· bib number;
· bike and helmet stickers;
· swim hat.
​
Participants should not expect to receive anything by mail.
Registration on the day might be available.
​
Transition area
Transition area opens at 06:00am. To enter transition, you must show your corresponding event number and bike sticker (which must be stuck to your seat post) to the event marshal.
​
The Route
All swim, bike and run courses are marked with signs and well marshalled.
The course map will be available to view once route is confirmed.
Based on the distance you are completing you will be required to do a particular number of laps at each leg.
​
Pre-Race Email
Detailed pre-race information will be published to all registered participants 2 weeks prior to the event.

facilities

Medical Cover
Suitable medical cover is provided at our events in case of a medical emergency.
​
Bag Drop
There will be NO bag drop on the day. Please leave belongings that you don’t need in the transition area or in your car.
​
Catering
We will have a food caterer onsite for pre and post race refreshments.
​
Photography
Event images are expected to be available, usually within 24 hours of the event.
Toilets
There are free portable toilets in the event village. This is your only chance to go, as there won't be toilets on the route.
​
Changing Room / Showers
There are no dedicated changing rooms/showers.
​
Water / Snack Stations
Water will be available at the start and finish, and there will be a water station on the run route.
There will be a water station on the bike course with water available for refilling your own water bottles only, should you need to. This will be self service.

further information

Spectators
Spectators are permitted anywhere in the start finish area. Please be mindful of others' comfort and safety in more popular locations, including the finish area.
​
Dogs
Participants must not be accompanied by a personally owned or controlled dog during an event. Entries may be accepted from participants with medical assistance dogs, subject to them being correctly registered and identifiable as such, and subject to prior approval by the Event Director.
​
Buggies, Pushchairs and Strollers
This event is not suitable for buggies, pushchairs, strollers (or similar) due to the nature of the terrain.
Wheelchairs
This event is not suitable for wheelchair users due to the nature of the event.
​
Earphones / Headphones
Noise-cancelling earphones/headphones are prohibited and, whilst we discourage the use of other earphones/headphones at our events, participants choosing to use them should ensure they are set to a low enough volume that instructions from event officials can be clearly understood.
​
Race Deferrals
Race deferrals are allowed until the event registration is closed (usually the Friday 12noon before the event date).

Reviews

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Location

RG9 3AS Dairy Lane, Henley-on-Thames, United Kingdom

Who's In

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The One on the River - Henley

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