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Descente London Duathlon

Top tags:

Stunning scenery

Friendly atmosphere

Incredible crowds

Get race results and photos

This event has passed. Congratulations to all the participants. Get race results and photos.

The Descente London Duathlon, the world's biggest run-bike-run event, will take place on Sunday 8th September 2019. Athletes can choose between a half duathlon, duathlon, ultra duathlon or duathlon relay and every athlete will receive a free Descente cycling jersey worth £130 as part of their entry package.

Review summary

5 Reviews
  • Course
  • Organisation
  • Atmosphere


Graham B
"This was a big thing for me. Having done only one very small Duathlon last..."


Leo K
"This was such an awesome event. It was my first ever Duathlon! It’s like a..."


"I cannot recomened this enough. It was the best event I have done this year or..."
See all reviews

How to enter the Descente London Duathlon

  1. Ultra Duathlon

    Duathlon: Run 20km, Bike 77km, Run 10km
    Event passed
  2. Full Duathlon

    Duathlon: Run 10km, Bike 44km, Run 5km
    Event passed
  3. Half Duathlon

    Duathlon: Run 5km, Bike 22km, Run 5km
    Event passed
  4. Team Duathlon

    Duathlon: Run 10km, Bike 44km, Run 5km
    Event passed

Event Details

What’s Included
    Exclusive access to race the world's biggest Duathlon on closed roads in Richmond Park.
    Limited Edition Descente cycling jersey worth £130.
    One of the best looking finishers medals to add to your collection.
Raceday Logistics
  • Event Village opens: 07:30
  • Ultra Start (20k run, 77k bike, 10k run): 09:30
  • Duathlon Wave 1 Start (10k run, 44k bike, 5k run): 09:45
  • Duathlon Wave 2 & Duathlon Relay Start (10k run, 44k bike, 5k run): 10:30
  • Half Duathlon Start (5k run, 22k bike, 5k run): 12:15
  • Event Village closes: 18:00
Kit List


    Descente London Duathlon cycling jersey or running top
    Leggings/shorts and socks
    Running shoes and cycle shoes (if you have them)
    Change of clothes for after
    Bike water bottle(s) full
    Spare inner tube, tyre levers, pump, bike tools
    Race bib number attached to your race belt or top with your medical info complete
    Bike bib number attached with cable ties
    Transition wristband
    Bike and helmet (with stickers attached)
    1 bag/box for transition area (max 50x50x50cm or 30L)
    Car park pass (in your race pack if purchased)
    Check your journey and weather forecast (there are some planned engineering works on SW Trains lines)

Questions & answers

  • J

    John R
    Do you have to bring your own bike or are they supplied.


    Steph E
    Hi there. For this event you will need to bring your own bike. For any further enquiries please can you ping customer support an email and they will help you out - [email protected] Many thanks! :)

Descente London Duathlon weather forecast

Clear throughout the day.

Predicted highs
Predicted lows

Meet the organizer

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Limelight Sports are ranked #12 in the UK out of 566 organizers

We work with leading brands, engaging their audiences through active experiences. Providing a platform for meaningful real-life connections we create and deliver campaigns with guaranteed results. From insight-led big ideas to strategy to execution, with over 25 years’ experience, we are the agency of the Active World. Our work with global brands such as Nike, J.P.Morgan, Royal Bank of Canada and ESPN Digital allows us to create and deliver campaigns around the world.

Descente London Duathlon reviews (5)

4.9 out of 5 stars

  • Course
  • Organisation
  • Atmosphere

Reasons people recommend this event

Stunning scenery

Friendly atmosphere

Incredible crowds

  • G

    Graham B

    Did the Full Duathlon in 2019

    This was a big thing for me. Having done only one very small Duathlon last year, I was a bag of nerves! I got myself a parking space at sheen gate and my first impression was, where do I go? Once in the village, I still felt very underwhelmed by the whole thing. Anyway, started the first run and the organisation and marshals started to make me feel more at ease. Loved the cycling part, very exhilarating course, yet challenging! Final run went better than planned. Once I crossed the line I was so pumped!! Loved it!! Amazing event in stunning area!! Can’t wait to do it all again!! Highly recommend!!!!
  • Did the Full Duathlon in 2019

    This was such an awesome event. It was my first ever Duathlon! It’s like a triathlon where you don’t get freezing cold and wet at the beginning. Will deff be signing up for 2020.
  • C


    Did the Full Duathlon in 2019

    I cannot recomened this enough. It was the best event I have done this year or maybe ever! Very well organised and what a beautiful location. I will be back!
  • Did the Full Duathlon in 2017

    I really enjoyed this event and it is one of the more interesting and demanding duathlons I think. I did find it quite expensive, as race entries go, however the organisation is very good, and it is an amazing chance to enjoy Richmond Park when it's completely closed to traffic. I would definitely recommend doing this event at least once. The best thing about the event was the atmosphere, the set up looks very professional and there is really good support, crowds and event village so it feels amazing to zoom through the barriers on your bike each lap, and also the finish chute from the run at the end. Also - having cycled around Richmond Park many, many times before, I expected the laps (being quite undulating and hilly) to feel like hard going, but the fact that it was traffic-free and the great atmosphere made it a surprisingly fast course!
  • Did the Ultra Duathlon in 2018

    Absolutely loved it. If you want an event to really push yourself an Ultra Duathlon is the one.It is a little repetitive doing laps of Richmond Park but actually knowing where you are, what you have coming up and how long to go is helpful.The last 10k is the hardest thing i've done so the sense of accomplishment was awesome!!!Event is set up well, transition areas are good.So local to London means easy for friends and family to come and watch