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ATW Midweek Dorney Triathlon - July

Dorney Lake, East of England, United Kingdom

calendar_today 01 Jul, 2026

About the Event

Chase your personal best at the iconic Midweek Dorney Triathlon on July 1st, 2026, set within the inspiring, flat-fast confines of Dorney Lake's Olympic venue. Escape open-road concerns and focus purely on speed in this draft-illegal challenge, where the clean, calm lake and smooth, traffic-free circuits are tailor-made for record-breaking performances. Choose your test: ignite your evening with a brisk Super Sprint (400m/10km/2.5km) or embrace the classic Sprint distance (750m/19km/5km). For those targeting swim-bike power, a dedicated Sprint Aquabike option provides the perfect platform. With enthusiastic support guiding every transition, this midweek race is the ultimate arena for seasoned athletes to sharpen their pace and newcomers to experience a world-class setting. Secure your spot for a 2026 triathlon in Windsor that combines Olympic legacy with an electrifying community atmosphere, all under the summer evening sky.

Races Offered

Sprint

Jul 01, 2026

straighten

Distance — 20 km 5 km

terrain

Type — Multisports

timer

18:30

Sprint Aquabike

Jul 01, 2026

straighten

Distance — 20K

terrain

Type — Multisports

timer

18:30

Super Sprint

Jul 01, 2026

straighten

Distance — 10 km 2.5 km

terrain

Type — Multisports

timer

19:00

Weather History

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

thermostat Temperature

13.7° / 22.2°

wb_sunny Feels like

12.0° / 19.9°

light_mode Avg sunshine hours

11h 0m

water_drop Avg rainfall

2.9 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 (5.6)

humidity_mid Humidity

70.1%

wb_twilight Sunrise

05:05

nightlight Sunset

21:10

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.