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Château de Chantilly Triathlon

Event details


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Set over the UK bank holiday weekend, the racing will take place in the spectacular and historic town of Chantilly, just a 2.5hrs drive from Calais and 40 miles north of Paris. With a variety of distances on offer, the whole family can get involved this summer.
C-19 Plan
Castle Triathlon Series has confirmed that this event will be going ahead as planned on Friday 27th Aug 2021 in accordance with the COVID-19 safety measures. Learn more

Review summary

3 Reviews
  • Course
  • Organisation
  • Atmosphere


Will W
"Stunning scenery running around the Chateuax and a good flat fast bike course...."


Alex T
"Great race in such a beautiful location. Really flat, fast bike and the run was..."


Liz C
"Beautiful scenery and well organized event. Just wish the half marathon..."
See all reviews

How to enter the Château de Chantilly Triathlon

  1. Sprint Plus

    Triathlon: Swim 0.8km, Bike 40km, Run 8km
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  2. Super Sprint

    Triathlon: Swim 0.4km, Bike 20km, Run 4km
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  3. Starter Tri

    Triathlon: Swim 0.2km, Bike 11km, Run 2.5km
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  4. The Gauntlet

    Triathlon: Swim 1.9km, Bike 90km, Run 21km
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  5. Olympic

    Triathlon: Swim 1.5km, Bike 45km, Run 10km
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  6. Duathlon Sprint

    Duathlon: Run 5km, Bike 20km, Run 2.5km
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  7. Aquabike Sprint

    Aquabike: Swim 0.75km, Bike 20km
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  8. Aquathlon Sprint

    Aquathlon: Swim 0.75km, Run 5km
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  9. Junior Triathlon (11-12 yrs old)

    Triathlon: Swim 0.2km, Bike 4km, Run 1.8km
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  10. Junior Triathlon (13-15 yrs old)

    Triathlon: Swim 0.3km, Bike 8km, Run 4km
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  11. Junior Triathlon (8-10 yrs old)

    Triathlon: Swim 0.1km, Bike 4km, Run 1.4km
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  12. Duathlon Standard

    Duathlon: Run 11km, Bike 45km, Run 6km
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  13. Aquabike Standard

    Aquabike: Swim 1.5km, Bike 45km
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  14. Aquathlon Standard

    Aquathlon: Swim 1.5km, Run 10km
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  15. Sprint Tri

    Triathlon: Swim 0.75km, Bike 20km, Run 5km
    Book Now
  16. Mixed Team Relay

    Triathlon: Swim 0.25km, Bike 5.75km, Run 1.5km
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  17. 1 Mile Swim

    Swim 1mi
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  18. 2.5k Swim

    Swim 2.5km
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  19. 5k Swim

    Swim 5km
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  20. 10k Run

    Run 10km
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  21. Half Marathon

    Run 13.1mi
    Book Now
  22. Marathon

    Run 26.2mi
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Château de Chantilly Triathlon routes

Chantilly provides a fantastic and challenging race, with the 2.5km Grand Canal overlooked by the Château and its gardens hosting the open-water swim.

Triathletes will transition within the Terrasse des Connétables and set off into a fast 20km or 45km cycle circuit around the Forêt de Chantilly.

After entering T2, competitors will run the surrounding woodlands, the world famous race course “LHippodrome” and Chateau gardens finishing within sight of the beautiful Chateau.

Event Details

  • Official race photography
  • Finisher's medal
  • Prizes for winners
  • Live music and entertainment
  • Fully marked and signed route


Please see the event website for more information.

The previous years start timings for the various Sprint events took place between 07:30 and 14:30. The Starter Tri, Children and Swim only events started between 15:00 and 17:00.

If Covid restrictions dictate, they shall follow a similar format at this Venue. If social distancing is not required, all adults events will take place in the morning and Children and Mixed Team Relay events after 14:00.

Entrants will be notified of their start time via email 2 weeks prior to the event. It is advised that entrants arrive at least 1 – 1.5 hours before their given wave time. Relays go off in the final wave of their distance.

See a full list of Castle Triathlon Partners at

Frequently Asked Questions

When will I be sent my start time for the Château de Chantilly Triathlon?
Participants will be emailed their start time approximately 2 weeks ahead of the event.
Do I have to wear a wetsuit for the swims at the Château de Chantilly Triathlon?
For swim length up to 1500m wetsuits will be optional on race day if the temp remains between 14 and 22 degrees centigrade. Events over 1500m swim length will have wetsuits as optional between 15 and 23 degrees centigrade.
I have a British Triathlon license, do I have to pay full price for the Château de Chantilly Triathlon?
While you cannot enter at a discounted price, all Multi-discipline participants who do NOT have a valid membership licence card of a recognised triathlon governing body such as FFT/BTF/TI, must purchase a F.F.Tri Day Competition Pass (also known and Pass Journeé and Pass Compétition). These details will be available nearer to the event date.

Meet the organiser

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Formed in 2009, the Castle Triathlon Series has swiftly established itself as the UK’s largest triathlon series. From Lough Cutra to Chantilly and Castles Howard, Cholmondeley and Hever, we’re immensely proud of the iconic backdrops to each Castle Triathlon Series race and the friendly festival atmosphere produced at every event.


Château de Chantilly Triathlon reviews (3)

3.7 out of 5 stars

  • Course
  • Organisation
  • Atmosphere
  • Did the HALF Marathon 21.1km in 2019

    Beautiful scenery and well organized event. Just wish the half marathon started much earlier. It was very hot by the time we started which was dangerous.
  • Did the The Gauntlet in 2019

    Great race in such a beautiful location. Really flat, fast bike and the run was beautiful around the castle, but swim in the canal had a lot of weeds. Amazing volunteers, pave on the bike course and getting to and from bike from transition wasn't ideal, but not enough to stop it being a fantastic race, would highly recommend.
  • Did the The Gauntlet in 2019

    Stunning scenery running around the Chateuax and a good flat fast bike course. Volunteers were all very helpful and a very friendly atmosphere. Locations is fantastic as very easy to get to from the UK.

    Swim is in a idyllic place but the lake is quite shallow with a lot of weeds and it had failed the water test. Medal is not great and there was no goody bag afterwards.

    Overall however, a great day out and recommended.

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Tickets £23–£165