Dorney Lake Christmas Duathlon & Lake Runs
Event details
Questions
- Dorney
- 500 participants
- By F3 Events

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Run into winter with a half marathon around the scenic Dorney Lake. This is the UK's flattest half marathon course and is great for runners looking for the consistency of a lapped course. Come along for that near-certain PB and bespoke finisher's medal.
C-19 Plan
F3 Events has confirmed that this event will be going ahead as planned on Saturday 12th Dec 2020 in accordance with the COVID-19 safety measures. Learn moreReview summary
3.9
9 Reviews
- Course
- Organisation
- Atmosphere
H
Harriet W
"This was my first running event ever and I really enjoyed it. Everyone was..."
C
Christopher W
"Good experience although it would have been useful to have distance markers...."
R
Ross M
"Lovely fast, flat, PB potential course. Whilst laps aren't the most fun thing,..."
See all reviews
How to enter the Dorney Lake Christmas Duathlon & Lake Runs
- Run 21.1km
Olympic Duathlon
Duathlon: Run 10km, Bike 40km, Run 5kmSuper Sprint Duathlon
Duathlon: Run 2.5km, Bike 10km, Run 2.5kmSprint Duathlon
Duathlon: Run 5km, Bike 20km, Run 5km15k Run
Run 15km10k Run
Run 10km5k Run
Run 5km
Dorney Lake Christmas Duathlon & Lake Runs routes
The location is one of the most iconic of the 2012 London Olympic Games.
The race takes place on flat tarmac roads and paths looping around the famous rowing lake.
The half marathon comprises of 4.5 laps of the scenic Dorney Lake.
Event Details
What’s Included
Raceday Logistics
Volunteers
Frequently Asked Questions
How do I receive my race number?
Race numbers should be collected on the day as well as your timing chip.
Where can I find my results ??
The results will be posted on F3 events website directly after the race. You will also receive a results email which will be sent to your email address after the event.
Is there a cut off time for the event?
Yes, the course will close at 15:30.
Will there be a bag drop?
No, there will be no bag drop at the event.
Meet the organiser

Offering fun, friendly, family, fast and focused events across the South. F3 Events was set up in 2006 and has been one of the leading sporting event organisers along the Thames Valley for the past 10 years.
Our mission is to organise, deliver and provide first class sporting events along the Thames Valley to aspiring athletes from complete beginners to elites athletes.
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Dorney Lake Christmas Duathlon & Lake Runs reviews (9)
Did the Half Marathon in 2018
This was my first running event ever and I really enjoyed it. Everyone was really friendly- only points of constructive criticism would be to have a MUCH clearer website and make it much easier to find photos and results. It took me days if searching through the web to find anything ! Also, the photos taken were pretty bad but that's a minor thing ! Overall, really fun and friendly eventDid the Half Marathon in 2018
Good experience although it would have been useful to have distance markers. This was a view shared by others.Did the Half Marathon in 2018
I had all the info I neededDid the Half Marathon in 2018
Lovely fast, flat, PB potential course. Whilst laps aren't the most fun thing, it enables easy pacing and a chance for supporters to see you and cheer you on multiple occasions. Get there early if you want to relax as there will likely be a queue for registration and the toilets.Did the Half Marathon in 2018
Great - efficient, friendly, fast courseDid the Half Marathon in 2018
Lack of toilets and bottled water at finishDid the Half Marathon in 2018
Getting the results could be a little easier.
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