Eton Dorney Sprint
Sprint Distance

Eton Dorney Sprint

Windsor, United Kingdom · JUN 2026

🏊 750m
🚴 20km
🏃 5km
15

Triathlon Index Score

Easy

Average Finish Time 01:12:00
Total Finishers 1 628
Temperature 17°C
Water Temperature 16°C
Bike Elevation ↑100m
Established 2013

"Lake swim and rolling countryside bike in Windsor, United Kingdom."

🏊 Swim

Distance 750m
Water lake (open-water)
Water Temp 16°C
Wetsuit conditional
Avg Split 00:12:00

Lake swim in Windsor.

🚴 Bike

Distance 20km
Elevation ↑100m
Profile flat
Drafting Non-drafting
Avg Split 00:32:00

Flat bike course in Windsor.

🏃 Run

Distance 5km
Elevation ↑10m
Surface road
Topology out-and-back
Avg Split 00:29:00

Run through Windsor.

Transition Details

T1 — Swim → Bike
T2 — Bike → Run

T1/T2 are in the same location · Surface: pavement

Weather

Air Temp 17°C 10°–22°C
Humidity 60%
Rain Chance 36%
Wind 10 km/h

Typical: 17°C, 60% humidity.

Registration

Registration Opens december
Entry Cost €96
Time Limit 2.5h
Register Now →

https://example.com/eton-dorney-sprint

The Story

There's something about triathlon in Windsor that doesn't translate to photos. The 750m swim sends you into cool lake at 16°C — cool enough to want a wetsuit, warm enough to swim without panic. The 20km bike is flat, built for speed and aero position. The 5km run is flat and fast through Windsor's streets. What makes it memorable: Detroit skyline across the water, automotive-city grit, an international border you can swim to but shouldn't. Short enough to hurt, long enough to matter.

"Windsor doesn't need to be the biggest race. It just needs to be honest. And it is."

First-time finisher — Post-race, Eton Dorney Sprint

What It Feels Like

sprint-distance triathlon with Windsor character. This course suits beginners and those chasing personal bests. The course doesn't fight you — it lets you race. The setting adds something no training plan can prepare you for.

🏊 The Swim

A 750m freshwater lake swim at 16°C. No salt sting, no currents, just you and the distance. Lake swims reward smooth technique over brute force.

🚴 The Bike

20km of flat road — a time-trialist's playground. The absence of climbing means aerodynamic position and sustained power determine your bike split. Wind, not gradient, is the variable here.

🏃 The Run

5km on flat Windsor streets. The course is honest — no hills to blame, no descents to coast. What you have left is what you run. In mild conditions averaging 17°C, heat management becomes pacing strategy.

💡 Insider Tips

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FAQ

What distance is the Eton Dorney Sprint? +

The Eton Dorney Sprint is a Sprint Distance distance triathlon: 750m swim, 20km bike, and 5km run (26km total) in Windsor, United Kingdom.

When is the Eton Dorney Sprint? +

The next edition is on June 8, 2026. The race is typically held in June.

Water temperature and wetsuit rules? +

Lake water at 16°C average. Wetsuit rules are conditional.

How hilly is the bike course? +

100m of climbing over 20km. Profile: flat. Drafting not allowed.

What's the weather like on race day? +

10–22°C, 60% humidity, 36% rain chance, 10 km/h winds.

Average finish time? +

Approximately 1h 12m. Varies with conditions and athlete experience.

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