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Windsor & Eton Spring Duathlon & Lake Runs

Event details
  • . 53 days left to book
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Run into spring with this fast, flat and friendly event. Great for athletes of all abilities, the course is a loop of the iconic Dorney Lake, host of the 2012 Olympic rowing events. Come for the awe-inspiring scenery or the bespoke medal.
C-19 Plan
F3 Events has confirmed that this event will be going ahead as planned on Saturday 13th Mar 2021 in accordance with the COVID-19 safety measures. Learn more

Review summary

14 Reviews
  • Course
  • Organisation
  • Atmosphere


James D
"Nice course around the lake. It's flat so no concern about hills. Only down..."


Colin J S
"My first ever half marathon and the 6th time i've ever in my life, ran..."


Miriam S
"A great race to discover a new area and also being a Olympic 2012 location ! No..."
See all reviews

How to enter the Windsor & Eton Spring Duathlon & Lake Runs

  1. 15km

    Run 15km
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  2. 10km

    Run 10km
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  3. 5km

    Run 5km
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  4. Half Marathon

    Run 13mi
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  5. Super Sprint Duathlon

    Duathlon: Run 2.5km, Bike 10km, Run 2.5km
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  6. Sprint Duathlon

    Duathlon: Run 5km, Bike 20km, Run 5km
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  7. Standard Duathlon

    Duathlon: Run 10km, Bike 40km, Run 5km
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Windsor & Eton Spring Duathlon & Lake Runs routes

Run Course:

The course starts and ends at the impressive boathouse overlooking the lake.

Runners will set out on a pan flat 5km loop around the iconic lake. The terrain is a mixture of tarmac paths and closed, traffic free roads.

The 5km run will be 1 lap, the 10km run will be 2 Laps, the 15km run will be 3 laps and the half marathon will be 4.5 laps.

When you finish your race, competitors are required to proceed into the finish line funnel to collect your finishers medal.

As one of the flattest courses in the UK, this is a great chance to record a PB.


These races are ideal for those looking to take part in their first duathlon event and Dorney Lake is the perfect venue.

There are three options to choose from:

Super Sprint Duathlon: 2.5KM Run, 10KM Cycle, 2.5KM Run
Sprint Duathlon: 5KM Run, 20KM Cycle, 5KM Run
Standard Duathlon: 10KM Run, 40KM Cycle, 5KM run

Event Details

What’s Included
  • Finisher's medals
  • Chip timed event
  • Secure baggage area
  • Refreshment stations
  • Aid stations
  • Marshalled course
  • Prizes for 1st, 2nd, 3rd overall Male and Female, 1st Vet (40+) Male and Female.
  • Free car parking
Raceday Logistics


Standard Duathlon Start

08:25 Sprint Duathlon Start

08:45 Super Sprint Duathlon Start

11:00 Half Marathon Start

11:30 15k Start

11:45 10k Start

12:15 5k Start

Registration will take place by the main boathouse at the far end of the lake.

Please arrive at least 45 minutes before the start of the race in order to collect your race number and timing chip.

Kit List

Duathlon competitors are expected to supply their own bike which is in good working order.

Helmets are also compulsory.

Spectators will not be permitted at this event to help keep participants and staff as safe as possible.

The volunteers are what make this event special. If you would like to join this superb team of people, please email [email protected].

In return F3 events will offer you:

  • Free entries for yourself or a family member
  • Free food and drink provided at the event
  • Event clothing

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 parking on-site?
There will be ample parking available for both competitors and spectators.

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.



Windsor & Eton Spring Duathlon & Lake Runs reviews (14)

3.9 out of 5 stars

  • Course
  • Organisation
  • Atmosphere
  • Did the event in 2019

    A great race to discover a new area and also being a Olympic 2012 location ! No really crawled,which allows to run comfortable. Maybe the price quiet high without race bag or complemetary service
  • Did the event in 2019

    Race was ok - nice and flat with tarmac paths. The challenge is that there was 2 races going on and everyone was looping around the circuit (4.5 times at various paces). The finish wasnt at all hugely apparent and I ended up going around again until my watch confirmed I had competed the distance - unfortunately my official time suggested it was at least a few mins slower than reality. Was a huge disappointment to completing a sub90 Pb.
  • Did the event in 2019

    My first ever half marathon and the 6th time i've ever in my life, ran outdoors. A great first experience.
  • Did the event in 2019

    Easy to park, and delivered on the promise of a very flat and trouble free course. Only builds for next time would be clearer mile markers defining distance passed by race. There were several markers up but it was unclear over whether it was the half or 20 miler. Also I heard confusion on the way round from fellow runners over how many laps they needed to run for the 20 mile race and they felt this hadn't been briefed correctly.
  • Did the event in 2019

    Course was nice, the gels i brought with me were inedible so having some available on the run was a saviour for me.
  • Did the event in 2019

    Nice course around the lake. It's flat so no concern about hills. Only down side is it's 4.5 loops of the lake so the scenery is a bit repetitive. Still a good race to do.
  • Did the event in 2019

    I think that you must to organiser better the indications when someone arrive to final line because I asked at 100 mt to final line in which part I had to go but anyone helped me and I turned in wrong way losting my precious minutes during the race. And it happened not only to me.
  • Did the event in 2019

    A bit disappointed with the organiser! No sign for half marathon considering its 1000 people race. We travelled some distance and spent some time to find the clubhouse. My husband came back to pick up nearly the finish, but no one open the gate to let him get in, so he had to park miles away and pushed our little son walking a couple miles and missed my finish time. Disappointing!
  • Did the event in 2019

    Great race. Does exactly what it says on the tin - laps, flat, great support! The perfect race for beginners or seasoned marathon runners in training. Thanks folks x
  • Did the 5km in 2017

    Was a great although very windy event. Great course and well set up. Fab support all the way around.
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Tickets £18–£60

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