The One on the River - Henley | Henley-on-Thames, United Kingdom

About the Event

The One on the River - Henley is set to take place in the idyllic Thames Valley region. This triathlon offers participants an immersive experience with its unique course that winds through the scenic Culden Faw Estate, known for its rolling hills and lush landscapes.
Swimmers will start their journey by diving into the cool waters of the river, providing a refreshing challenge amidst natural beauty. Following the swim leg, athletes transition to bicycles where they face undulating roads that offer both exhilarating descents and challenging climbs through picturesque countryside.
The final running segment takes competitors along winding trail paths with breathtaking views of the surrounding valley. This course not only tests endurance but also rewards participants with a stunning backdrop of nature at its finest.
The event promises an unforgettable day for triathletes, combining the thrill of competition with the serene beauty of Henley's countryside. Whether you are looking to push your limits or simply enjoy the scenic route, The One on the River - Henley offers a unique blend of challenge and natural splendor.

Races Offered

Middle Aquabike

Sep 20, 2026

straighten

Distance — 90.9K

terrain

Type — Running

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77 days remaining

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£80.22

Middle Triathlon

Sep 20, 2026

straighten

Distance — 100.4K

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Type — Running

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77 days remaining

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£110.40

Sprint Aquabike

Sep 20, 2026

straighten

Distance — 30.8K

terrain

Type — Running

timer

77 days remaining

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£60.38

Sprint Triathlon

Sep 20, 2026

straighten

Distance — 35.8K

terrain

Type — Running

timer

77 days remaining

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£69.86

Standard Aquabike

Sep 20, 2026

straighten

Distance — 55.5K

terrain

Type — Running

timer

77 days remaining

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£64.69

Standard Triathlon

Sep 20, 2026

straighten

Distance — 65.5K

terrain

Type — Running

timer

77 days remaining

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£80.22

Swim 1500m

Sep 20, 2026

straighten

Distance — 1.5K

terrain

Type — Running

timer

77 days remaining

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£30.19

Swim 3000m

Sep 20, 2026

straighten

Distance — 3K

terrain

Type — Running

timer

77 days remaining

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£39.68

Swim 750m

Sep 20, 2026

straighten

Distance — 0.8K

terrain

Type — Running

timer

77 days remaining

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£25.01

Weather History

These values represent the 3-year monthly averages for September in Henley-on-Thames.

thermostat Temperature

11.3° / 19.2°

wb_sunny Feels like

9.0° / 16.9°

light_mode Avg sunshine hours

8h 14m

water_drop Avg rainfall

3.2 mm

ac_unit Avg snowfall

—

air Avg wind speed

14.0 km/h (Gentle breeze)

opacity Sweat loss rate

Moderate

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (3.5)

humidity_mid Humidity

79.9%

wb_twilight Sunrise

06:39

nightlight Sunset

19:17

About Henley-on-Thames

Learn more about the host city, Henley-on-Thames.

Henley-on-Thames is a town on the River Thames in South Oxfordshire, England. Henley is perhaps most famous as the home of the well-known international rowing tournament, the Henley Royal Regatta, held each year in late June and early July.