Name: The One on the River - Henley
Start: 2026-09-20
End: 2026-09-20
Location: Henley-on-thames

About the Event

The One on the River - Henley is an exhilarating triathlon that takes place in the idyllic Thames Valley. Nestled within this scenic region, the race offers participants a unique blend of natural beauty and challenging terrain. Swimmers will dive into the river itself for an invigorating start to their journey. The cycling portion winds through undulating open roads, providing cyclists with a dynamic course that tests endurance and strength. Finally, runners navigate trail paths that offer breathtaking views of the surrounding countryside, making this event not just a competition but also a celebration of nature's splendor.
The Culden Faw Estate serves as one of the key backdrops for this triathlon, enhancing the experience with its lush landscapes and serene atmosphere. Whether you're an experienced athlete or new to the sport, The One on the River - Henley promises an unforgettable adventure along the riverbanks and through scenic trails.

Races Offered

Middle Aquabike

Sep 20, 2026

straighten

Distance — 90.9K

terrain

Type — Running

timer

32 days remaining

sell

£79.58

Middle Triathlon

Sep 20, 2026

straighten

Distance — 100.4K

terrain

Type — Running

timer

32 days remaining

sell

£110.39

Sprint Aquabike

Sep 20, 2026

straighten

Distance — 30.8K

terrain

Type — Running

timer

32 days remaining

sell

£59.90

Sprint Triathlon

Sep 20, 2026

straighten

Distance — 35.8K

terrain

Type — Running

timer

32 days remaining

sell

£70.17

Standard Aquabike

Sep 20, 2026

straighten

Distance — 55.5K

terrain

Type — Running

timer

32 days remaining

sell

£65.04

Standard Triathlon

Sep 20, 2026

straighten

Distance — 65.5K

terrain

Type — Running

timer

32 days remaining

sell

£79.58

Swim 1500m

Sep 20, 2026

straighten

Distance — 1.5K

terrain

Type — Running

timer

32 days remaining

sell

£29.95

Swim 3000m

Sep 20, 2026

straighten

Distance — 3K

terrain

Type — Running

timer

32 days remaining

sell

£40.22

Swim 750m

Sep 20, 2026

straighten

Distance — 0.8K

terrain

Type — Running

timer

32 days remaining

sell

£24.82

Weather History

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

thermostat Temperature

11.3° / 19.3°

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 and civil parish on the River Thames, in the South Oxfordshire district, in Oxfordshire, England, 9 miles (14 km) northeast of Reading, 7 miles (11 km) west of Maidenhead, 23 miles (37 km) southeast of Oxford and 37 miles (60 km) west of London, near the tripoint of Oxfordshire, Berkshire and Buckinghamshire. The population at the 2021 census was 12,186.