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Dorney Lake Autumn Duathlon & Run

  • . 55 days left to book

Why book with us?

  • Official booking partner
  • Best price guarantee
  • Free injury protection

Have a question? See our Help Center

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Tickets £20–£60

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  • Official booking partner
  • Best price guarantee
  • Free injury protection

Have a question? See our Help Center

Take on the fast and flat course around the iconic Olympic venue - Dorney Lake. An extremely friendly and well-organised event which has a great buzz and atmosphere. The perfect event for all runner's abilities and there is no better course in the UK than this to try and smash that PB.

Review summary

1 Review
  • Course
  • Organisation
  • Atmosphere


Gemma D
"This was poorly organised no direction of what was going on. Say it was time..."
See all reviews

How to enter the Dorney Lake Autumn Duathlon & Run

  1. Half Marathon

    Run 13.1mi
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  2. 10k

    Run 10km
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  3. 5k

    Run 5km
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  4. 15k

    Run 15km
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  5. Super Sprint

    Duathlon: Run 2.5km, Bike 12km, Run 2.5km
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  6. Sprint

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

    Duathlon: Run 10km, Bike 40km, Run 5km
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Dorney Lake Autumn Duathlon & Run routes


First Run Course

  • The run will start next to the Main Registration Marquee and will be an out and back course measuring 2.5km.
  • The Super Sprint Duathlon run will be 1 out and back lap, the Sprint Duathlon run will be 2 out and back laps and the Olympic Duathlon run will be 4 out and back laps.
  • Once completed, competitors will proceed into the RUN IN entrance of the transition area.

Bike Course

  • The course consists of approx. 5km laps up and down the side of the famous lake.
  • Super Sprint Duathlon will complete 2 laps, the Sprint Duathlon will complete 4 laps and the Standard Duathlon will complete 8 laps.
  • Please note that it is the competitors responsibility to count the number of laps they have ridden.

Final Run Course

  • The final run course is once again an out and back loop equal to 2.5km.
  • The Super Sprint distance will be 1 lap and the Sprint & the Olympic distances will be 2 laps.


  • The 5km, 10km, 15km & half marathon courses are laps around the famous rowing lake.
  • The course is fast and flat and takes place on tarmac paths and closed roads.
  • This is a perfect course for first time runners or those looking to get a PB

Event Details

What’s Included
  • Chip Timing
  • Bespoke Medals
  • Onsite Parking
  • Baggage Area
  • Toilets
  • Ambulance Services
  • Marked Course
  • Feed Stations
  • Marshalled Course
  • Onsite Retailers
Raceday Logistics


You will collect your race numbers on the day of the event when you come to register. You will also collect your timing chip at registration on the day.


08:00am- Duathlon Start

09:00am Venue & Registration opens for 5km, 10km, 15km & Half Marathon

10:45am - Half Marathon, 15km, 10km & 5km Start

Please arrive at least 45 minutes before the start of your race in order to complete the registration process.

Kit List
  • Duathlon competitors are expected to supply their own bike in good working order.
  • Helmets are also compulsory

Spectator's are very welcome! Create that amazing atmosphere as you cheer on your family or friends from start to finish.


To volunteer please email [email protected] and one of the F3 events team will contact you.

Frequently Asked Questions

At what time does the Windsor Autumn Half Marathon start?
The Windsor Autumn Half Marathon starts at 10:45am. Competitors should arrive from 9:00am.
Is the Windsor Autumn Half Marathon family-friendly?
Yes. The traffic free setting and easy car-parking makes it easy for spectating family members to move around and create a friendly atmosphere, or family members can sign up for the shorter-distance races. For safety purposes, dogs and prams should not be brought onto the course at any time.
Can you sign up for the Windsor Autumn Half Marathon on the day?
Yes. You can sign up on the day, but any entries received on the day or in the two-week build-up will incur a £5 fine.
Have a question? Get answers from our team.

Is your question about booking your place? See our Help Center

Dorney Lake Autumn Duathlon & Run weather forecast

Drizzle throughout the day.

Predicted highs
Predicted lows
IconHigh chance of rain
IconLight breeze possible, up to 7mph

Meet the organizer

F3 Events

Verified organizer

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F3 Events
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.

Dorney Lake Autumn Duathlon & Run reviews

2 out of 5 stars

  • Course
  • Organisation
  • Atmosphere
  • G

    Gemma D

    Did the Half Marathon in 2019

    This was poorly organised no direction of what was going on. Say it was time chipped find that hard to believe as there was no chip monitor at start line or around the course for spilts. Atmosphere on the course was pretty poor. Wouldn’t do it again.

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