ATW Dorney Triathlon - August | Dorney Lake, United Kingdom

About the Event

Race on hallowed Olympic ground at the Dorney Triathlon, a premier multi-format event set for Saturday, 8 August 2026 at the iconic Dorney Lake near Windsor. This is your chance to swim, bike, and run on the same traffic-free circuit that hosted the London 2012 Games, offering a perfectly flat and fast course ideal for chasing a personal best in Sprint or Standard distances. With wave starts from 07:30 AM, the event caters to all athletes, featuring dedicated categories for age groups, females, plus Aquabike and Relay options for those who want to share the challenge. Organised by the UK's largest promoter, Active Training World, it provides full British Triathlon sanctioning, professional chip timing, and a supportive atmosphere on a world-class stage. Secure your entry for a brilliantly accessible and competitive triathlon where every discipline unfolds on legendary turf.

Races Offered

Sprint Triathlon

Aug 08, 2026

straighten

Distance — 19 km 5 km

terrain

Type — Multisports

timer

07:30

Sprint Aquabike

Aug 08, 2026

straighten

Distance — 19K

terrain

Type — Multisports

timer

07:45

Sprint Relay

Aug 08, 2026

straighten

Distance — 19 km 5 km

terrain

Type — Multisports

timer

07:45

Standard Triathlon

Aug 08, 2026

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Distance — 38 km 10 km

terrain

Type — Multisports

timer

08:30

Standard Aquabike

Aug 08, 2026

straighten

Distance — 38K

terrain

Type — Multisports

timer

08:45

Standard Relay

Aug 08, 2026

straighten

Distance — 38 km 10 km

terrain

Type — Multisports

timer

08:45

Super Sprint

Aug 08, 2026

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Distance — 10 km 2.5 km

terrain

Type — Multisports

timer

10:00

Weather History

These values represent the 3-year monthly averages for August in Dorney Lake.

thermostat Temperature

13.4° / 22.5°

wb_sunny Feels like

11.8° / 20.3°

light_mode Avg sunshine hours

10h 14m

water_drop Avg rainfall

1.4 mm

ac_unit Avg snowfall

—

air Avg wind speed

13.1 km/h (Gentle breeze)

opacity Sweat loss rate

Moderate

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (4.9)

humidity_mid Humidity

71.5%

wb_twilight Sunrise

05:49

nightlight Sunset

20:22

About Dorney Lake

Learn more about the host city, Dorney Lake.

Dorney Lake is a purpose-built rowing lake and Meetings & Events Venue in England. It is near the village of Dorney, Buckinghamshire, and is around 3 km west of Windsor and Eton, close to the River Thames.