Dorney Lake Triathlon August 2026
Sat, Aug 8, 2026
Dorney Lake, Windsor
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Dorney Lake Triathlon August 2026
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Booked 2 times in the last week
About
Join RunThrough for a summer's morning triathlon at Dorney Lake. Enjoy the cool open-lake swim under the heat of the summer sun and dry off as you cycle and run around the waterside. This flat route is perfect for athletes of all levels so come and to claim your finisher's medal.
Sprint Triathlon, Sprint Aquabike, Sprint Relay, and 4 more
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Sat, Aug 8, 2026
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Windsor, United Kingdom
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Where and when
Location
Dorney Lake, Dorney Lake, Windsor SL4, UK
Start times
Saturday, Aug 8, 2026
Sprint Triathlon: 7:30 AMSprint Aquabike: 7:30 AMSprint Relay: 7:30 AMStandard Triathlon: 8:30 AMStandard Aquabike: 8:30 AMStandard Relay: 8:30 AMSuper Sprint Triathlon: 10:00 AM
Event summary
Here are the distances available for Dorney Lake Triathlon August 2026
Sprint Triathlon
0.75km
20km
5km
£78
Standard Triathlon
1.5km
37km
10km
£99
Sprint Aquabike
0.75km
20km
£68
Standard Aquabike
1.5km
40km
£89
Sprint Triathlon
0.75km
20km
5km
£78
Standard Triathlon
1.5km
37km
10km
£99
Sprint Aquabike
0.75km
20km
£68
Standard Aquabike
1.5km
40km
£89
Route information
This stunning Olympic venue is where Team GB won Bronze for Rowing in 2012 and it has held host to a variety of high-performance events since.
All participants will begin their event with a 0.4km or 0.75k swim before heading to their transition area and beginning their bike stage.
Those in the sprint event will bike 20km while those in the standard event will cycle 37km around the Dorney event site. There are fantastic views to take in throughout before participants head onto the 2.5k or 5k run
Each discipline will be accurately marked out with distance markers and arrows to guide you in the right direction and inform you of how far you've come. There will also be marshals stationed throughout the course for safety reasons and of course to cheer you on.
Course Details & Maps
Super Sprint Triathlon
400m Swim | 9.5km Bike - 2 Laps | 2.5km Run
Elevation - 20m | Terrain - Road
Sprint Triathlon
750m Swim | 19km Bike - 4 Laps | 5km Run
Elevation - 40m | Terrain - Road
Standard Triathlon
1500m Swim | 38km Bike - 8 Laps | 10km Run
Elevation - 80m | Terrain - Road
Bike Map here
10k Run Map here
5k Run Map here
What's included
- Finisher's Medal
- Chip-timed results
- Marshalled course
- Refreshment station
- Aid station
- Bag drop
- Free race photos
How to get there
Dorney Lake, Dorney Lake, Windsor SL4, UK
Get full directionsPARKING/TRAVEL
Free parking is available at Dorney Lake and will be signposted as you enter the venue. Please bear in mind there could be up to a 20-minute walk to registration depending upon which car park you find yourself in so we advise you to leave plenty of time for arrival.
Nearest Train stations: Slough and Windsor & Eton Riverside
Event day logistics
7:30 am – Sprint Triathlon –Under50 ‘Open’ category
7:45 am – Sprint Triathlon – 50 and Over ‘Open’ category & All Female category & All Sprint Relays & All Sprint Aquabike
8:30 am – Standard Triathlon – Under40 ‘Open’ category
8:45 am – Standard Triathlon – 40 and Over ‘Open’ category & All Female category & All Standard Relays & All Standard Aquabike
10:00 am - Super Sprint Triathlon
13:30 pm - Race End
CUT-OFF TIME
No, everyone is welcome, however please get in contact with us at info@runthrough.co.uk if you plan to take more than 3hrs to complete your race as we may need to make special arrangements around the course and event village.
MINIMUM AGES
There are age requirements for the following races:
Standard Triathlon - 17 years old and above
Super Sprint & Sprint Triathlon - 15 years old and above
BAGGAGE
We will have a secure marquee where you can leave your baggage. We recommend you bring as little baggage as possible. Your baggage tag is attached to your race number, you simply tear it off and attach it to your bag. To collect, show your number to our staff and they will help you find your baggage.
TOILETS
There will be portaloos available in the event village next to the boathouse. The toilets are a short distance from the transition area.
REFRESHMENTS
There will be a water station available on each lap of the 5k course (at around the 2.5km mark). There will also be a bottle of water waiting for you at the finish line. We recommend bringing your own water with you to stay hydrated in the lead up to the event and running with a hydration where possible.
RESULTS
Results will be available here immediately after the race.
PICTURES
We will have an official photographer at the event, please check out our photos page after the race.
SOCIAL MEDIA
RunThrough South / Dorney Triathlon
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CONTACT EMAIL ADDRESS
Reviews
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5 reviews
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