Dorney Triathlon

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Join us for the Dorney Triathlon! Take on a Sprint or Standard Distance Triathlon around Dorney Lake, and take the opportunity to race around this unique and inspiring Olympic venue!Come and enjoy the day with us. We hope to see you there!
Olympic Triathlon, and Sprint Triathlon
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Sun 11th Aug 2019
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Windsor, United Kingdom
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(6 Reviews)
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Where and when
Dorney Lake, Dorney Lake, Windsor SL4, UK
Start times
Sprint Triathlon:
7:00am |
Olympic Triathlon:
Races summary
Here's what races are available for Dorney Triathlon
Sprint Triathlon
Olympic Triathlon
Route information
The purpose-built lake is perfect for the swim and the flat grounds lend themselves to a totally flat bike and run course, the ideal venue for a chip-timed PB. Each discipline will be accurately marked out with distance flags and we will have plenty of helpers to keep you on track and encourage you all the way to the finish.
The route is clockwise. The course will be well marked with swim buoys and you will complete 1 lap for the sprint distance and 2 laps for the standard distance. After completing your correct number of laps, you will head for the swim exit marked by flags.
The 5km bike loop will be completed 4 times for sprint distance athletes and 8 times for standard distance athletes. It is your responsibility to count your own laps. We find the best way of doing this is with the aid of a bike computer or watch.
Starting from the transition area, triathletes will run either 1 or 2 out and back loops, alongside the lake. The course is on pavements and is completely flat.
Organiser route images
What's included
Chip-timed results
Unique themed medal
Free official event photos
Fruit & flapjacks
How to get there
Dorney Lake, Dorney Lake, Windsor SL4, UK
Get full directionsExternalLink
By Car:
There will be free parking available for all participants next to the event village.
Directions to the venue are as follows:
Exit at Junction 7 and follow slip road to roundabout
Turn left onto A4 towards Maidenhead
After traffic lights, turn left at roundabout onto B3026, signposted for Dorney and Eton
On sharp left-hand bend, turn right, signposted Dorney Reach
After 400m enter Dorney Lake, Eton College Rowing Centre through large white double gates
Follow perimeter road to left of lake down to the boathouse
By Train:
For details on how to get to the park from nearby public transport, please refer to Google Maps or Citymapper.
The nearest train stations are Slough and Windsor & Eton Riverside. Burnham, Taplow and Maidenhead stations are also nearby.
Event day logistics
RunThrough's logo
RunThrough is one of the UK’s premier running event organisers. Their events are widely regarded as inclusive and friendly, with the RunThrough community being at the heart of everything they do. Runners can enter a huge variety of distances from 5k’s all the way up to the mighty marathon. If you’re new to running and looking to book onto your first event, then these events are the ones for you.
View more RunThrough events
Spectator Info
Spectators are free to wander around the lake, so you can see where the competitors will be running. The course is lapped so you will see them on numerous occasions!
Kit List
Swim hats are compulsory and will be provided.
As mentioned, the temperature of the lake is taken on the morning of the event, and if it is over 14 degrees then wetsuits will be optional. If the temperature is over 22 degrees then wetsuits will not be allowed.
Helmets are compulsory for the bike section.
6 reviews
FriendlyFaceFriendly atmosphere
FamilyFamily friendly
LighteningPerfect for a pb
geoff n
Did the Sprint Triathlon in 2019
Been to several events at Dorney...this probably amongst the "friendliest"...all abilities made to feel very welcome...nice to bike on a traffic-free course.
Matt M
Did the Olympic Triathlon in 2019
A great day with a fun course. Excellent for getting a PB and very well organized with good timing. Very friendly competitors and staff. My favourite place to race.
Andrew O
Did the Olympic Triathlon in 2019
Everything was perfect apart from the wind! Very well organised, fantastic course and event area and not too many competitors. Made for a 10yr PB so chuffed to bits! Great job to all involved, see you next year!
Did the Olympic Triathlon in 2019
Well organised team. Friendly atmosphere. Good for family to attend and support. I will race at venue with organiser again.
Pam S
Did the Olympic Triathlon in 2019
Very enjoyable, despite an evil cross-wind. The course is quite exposed, but in favourable conditions, ideal for a PB. Very friendly.
Did the Sprint Triathlon in 2019
I've done this race a few years in a row now and always enjoy it. It has a friendly laid back atmosphere, which you might not expect from a very fast course which I'm sure a lot of people use to try and set PBs. It caters well for all levels, with a wide swim start, a bike course where overtaking is easy, and a nice there and back run. All the volunteers were exceptionally smiley and friendly. The early start was good this year as it meant the worst of the wind was avoided, but if you're not a morning person this might not be the best event, as you have to arrive around 6am.Overall, a really great event!
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Find out more from members of the community who did the event last year, or those signed up.
Is your question about booking your place?
Recent Questions
Chris Bowers
What time do I need to get to dorney for the Olympic tri
Steph Ede
Hi there. Registration is on race-day and starts at 5:40am and closes at 6:40am. There is then a mandatory race briefing at 6:45! :)
Steph Ede
Hi there. Let's Do This recommend that you arrive 45 minutes before the start. This will give you time to register and set up your transition. Have a great event! :)
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