Dorney Triathlon (plus 5K, 10K, and Half)
About this event
We are excited to announce the return of Dorney Triathlon in 2019. Join us at Dorney Lake; home to London 2012’s rowing and canoeing events for a sprint or standard distance triathlon. The purpose built lake is perfect for the swim and the flat grounds lend themselves to a totally flat bike and run course, ideal for chasing down a new personal best!
Raceday details
Your organiser
RunThrough are a running community-based in London, inspired & led by a small passionate group of running geeks. We organize events all over the UK’s capital and the North West of England.
How to enter
Tickets available until Tue Jun 04 2019
What's included:
- Chip timed results
- Unique themed medal
- Free official event photos
- Fruit & Flapjacks
- Event T-shirt included with both triathlons, available for £10 with the other races
Olympic Triathlon
Swim 1.5km, Bike 40km, Run 10km
Sprint Triathlon
Swim 0.75km, Bike 20km, Run 5km
Half Marathon
Run 21.1km
Benefits of booking with Let's Do This
Free injury protection - Refunds until 4 days before the event.
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Greg Whitaker
Debbie Clay

Greg Whitaker
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Route description
Route description
TRIATHLON COURSE
The Swim -
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 Bike Ride -
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.
The Run -
Starting from the transition area, triathletes will run either 1 or two out and back loops, alongside the lake. The course is on pavements and is completely flat. There will be 1 drinks station on the course, manned by marshals serving water in plastic cups. This is the only drinks station and you will pass it on each lap.
Start Times
10:00 am - Half Marathon
10:45 am - 5K & 10K
You are free to wander around the lake so you can see where the competitors will be running. It is lapped so you will see them on numerous occasions.
No volunteers needed :)
Dorney Lake, Dorney Lake, Windsor SL4, UK
Get directionsDorney Lake, Off Court Lane, Windsor, Berks, SL4 6QP
Dorney Lake is ideally placed being within easy reach of London, Heathrow Airport, the M4 corridor and the M3, M25 and M40 motorways. It is well served by the rail network with main stations being Slough, Maidenhead and Windsor. Taplow and Burnham train stations are also nearby.
There will be free parking for all participants next to the event village and start and finish!
BY ROAD
- Exit at Junction 7 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
Main stations for Dorney Lake are Slough and Windsor & Eton Riverside. Burnham, Taplow and Maidenhead stations are also nearby.

Greg Whitaker

Steph Ede
Debbie Clay

Steph Ede

Greg Whitaker

Steph Ede

Satyam Niroula Chhetri

Steph Ede
Route description
Route description
TRIATHLON COURSE
The Swim -
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 Bike Ride -
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.
The Run -
Starting from the transition area, triathletes will run either 1 or two out and back loops, alongside the lake. The course is on pavements and is completely flat. There will be 1 drinks station on the course, manned by marshals serving water in plastic cups. This is the only drinks station and you will pass it on each lap.
Start Times
10:00 am - Half Marathon
10:45 am - 5K & 10K
You are free to wander around the lake so you can see where the competitors will be running. It is lapped so you will see them on numerous occasions.
No volunteers needed :)
Dorney Lake, Dorney Lake, Windsor SL4, UK
Get directionsDorney Lake, Off Court Lane, Windsor, Berks, SL4 6QP
Dorney Lake is ideally placed being within easy reach of London, Heathrow Airport, the M4 corridor and the M3, M25 and M40 motorways. It is well served by the rail network with main stations being Slough, Maidenhead and Windsor. Taplow and Burnham train stations are also nearby.
There will be free parking for all participants next to the event village and start and finish!
BY ROAD
- Exit at Junction 7 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
Main stations for Dorney Lake are Slough and Windsor & Eton Riverside. Burnham, Taplow and Maidenhead stations are also nearby.

Greg Whitaker

Steph Ede
Debbie Clay

Steph Ede

Greg Whitaker

Steph Ede

Satyam Niroula Chhetri
