The One on the River - Henley
21 Sep 2025 (Sun)
100.40km, 90.90km, 65.50km, 55.50km, 35.75km, 30.75km, 3km, 1.50km, 0.75km
Join The One on the River - Henley 2025
The Henley triathlon, known as The One on the River - Henley, is set to occur in the picturesque Thames Valley region, with routes passing through the Culden Faw Estate. Participants will have the opportunity to swim in the river, bike along undulating open roads and run along trail paths boasting stunning views.
Course details
Start address: Higginson Park, High Street, Marlow, UK
Finish address: Higginson Park, High Street, Marlow, UK
Register
Registration closes on 19 September (271 days left)
selected tickets
Total
You can, within 24 hours after your registration, get a full refund if you change your mind.
What’s included
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done Finisher medal
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done Timing chip (single use)
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done Photo Service
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done Drink Stations info
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done Medical Assistance
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done Toilets info
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Frequently asked questions
When and where can I collect my BIB/race pack?
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.
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.
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.
The race information has been found on the official website of the event or through publicly available sources. Always refer to the official website the latest race information. Please let us know if any data is wrong or missing, by emailing us.