Triathlon
Sprint
75 km
Start: Jul 17, 07:30 PM
73.50 EUR
Eton Dorney Family Triathlon
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Triathlon in United Kingdom, Windsor
Distances
Triathlon
Super Sprint
45 km
Start: Jul 17, 07:45 PM
89.25 EUR
Triathlon
Youth
25 km
Start: Jul 17, 07:45 PM
60.90 EUR
Running
10km
10 km
Running
Family Triathlon
10 km
Running
SUPathlon
10 km
Running
5km
5 km
Triathlon
Tristars Start 1
5 km
Start: Jul 17, 08:30 PM
49.75 EUR
Triathlon
Tristars Start 2
3 km
Start: Jul 17, 09:00 PM
47.25 EUR
Triathlon
Family Fun
2 km
Start: Jul 17, 10:00 PM
42.00 EUR
About
Eton Dorney Family Triathlon offers adult and junior competitors a choice of sprint and super-sprint distances at Dorney Lake, featuring an open-water swim, flat traffic-free bike course and spectator-friendly run. A great family event in a safe, scenic setting.
Catering & aid stations
On-course food and drink available at Dorney Lake during the event.
Pacers
Pacemakers will lead age-group waves in the sprint and super-sprint races on race day; see the event website for target times and pacer flags at the start/finish.
Results
View official resultsTypical weather in Windsor
Monthly averages based on historical data (2000–present).
Jan7°2°
↑ 08:03
↓ 16:22
Feb8°2°
↑ 07:19
↓ 17:16
Mar11°3°
↑ 06:17
↓ 18:07
Apr14°5°
↑ 06:07
↓ 19:59
May17°8°
↑ 05:11
↓ 20:48
Jun20°12°
↑ 04:46
↓ 21:22
Jul22°14°
↑ 05:04
↓ 21:14
Aug21°13°
↑ 05:49
↓ 20:26
Sep19°11°
↑ 06:39
↓ 19:18
Oct15°9°
↑ 07:27
↓ 18:10
Nov11°5°
↑ 07:22
↓ 16:14
Dec8°3°
↑ 08:03
↓ 15:54
Sign up now
Register on the official organiser website.
Sign up nowWhat's included in entry
- Open-water swim at Dorney Lake
- Closed-road bike course
- Spectator-friendly run course
- Event medal
- Official event T-shirt
Prices & signup
- Sprint73.50 EUR
- Super Sprint89.25 EUR
- Youth60.90 EUR
- Tristars Start 149.75 EUR
- Tristars Start 247.25 EUR
- Family Fun42.00 EUR
FAQ
What are the age categories and cut-off dates?
Juniors (under 15 on 31/12/2025), Youth (15–16 on 31/12/2026), Adults (17+, 31/12/2026). Check the timetable for wave start times.
Is the course closed-road?
Yes, Dorney Lake is a closed-road venue with no traffic during the event.
Are prices the same on the day?
Entry prices increase on the day; pre-book to secure lower rates shown on the registration page.
Last updated: Jun 6, 2026, 12:19:47 AM
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