This event has taken place

Congratulations to everyone who took part. We're waiting on information about the next edition of this event.

Did you race? Let the community know how you got on and leave a review.

Add a review

Want to see all previous and future editions of this event, find them below.

The Castle Run Series - Château de Chantilly

Chantilly, France

Chantilly, France

Sun 29th August 2021

1 race




The safety of our community is our priority and we are always working (and adapting) our plans to ensure safe racing.

All our 2022 events will be run in line with government guidelines and, if required, we have plans in place to run them as socially distanced events.

We ran a very successful socially distanced event at Hever Castle in September 2020. If required, we have safety plans in place so that all events and all venues can be run as socially distanced events. If this is necessary, we keep our community informed and will be in touch with relevant athletes with detailed information.

Our decision making will be informed by announcements from and conversations with the following groups:

  • Government
  • Sporting governing bodies
  • Venues
  • Suppliers
  • Athletes

To plan and run socially distanced events, we are guided by the following five principals:

  • Education Communication
  • Density Reduction
  • Touch Point Reduction
  • Athlete Self-Reliance
  • Hygiene Emphasis

It is vital that as a community, we all take responsibility to keep each other safe whilst preparing and taking part our event weekends. We are grateful for your continued support and understanding.

Castle Race Series has provided covid-19 safety information for this event.

Organiser's Description

Part of the Castle Triathlon Series Weekend of Multisport, Swimming and Running.

We’re delighted that the 2021 Castle Run Series is going ahead and will make its yearly pilgrimage over the English Channel in August for the fifth race of the series.

Set over the UK bank holiday weekend and the end of August, 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.


  • 10k, Half & Marathon


    Prices From



  • 10k, Half & Marathon


    Prices From


60500 Chantilly, Oise, France.

Chantilly is a 2.5hr drive from Calais and 40 miles North of Paris.

How To Get There

By Car: Chantilly is less than one hour from Paris and 2 1/2hours from Calais Eurotunnel. Autoroute du Nord (A1): From Paris to Calais: Chantilly exit. From Lille: Survilliers exit or take the RN 16 or RN 17. By train: Paris-Chantilly: From the Gare du Nord (27 minutes). Train timetables are available From Chantilly Station to the Château: Taxi from the station (cost: about 6 €). Cariane coach for Senlis (free in Chantilly): departure from the bus station. Alternatively walking to the Château from the station should take about 35 minutes.

Competitor special deals - P&O Ferries
We are pleased to offer a 15% discount on journeys to France. This is subject to availability, so best to book early, especially as it’s a Bank Holiday weekend! Please follow the link here and then enter the following ‘Rally Code’: 3912478 (subject to availability)

Camping and Hotels
There are campsites available locally including Campix in St Leu d’Esserent where previous participants have stayed. Click the below links for other useful information.

Alternatively, If you wish to stay at a hotel, Mercure Chantilly Hotel are offering 145€ Bed and breakfast in double standard room and 195€ in family room per night. To get this offer, please email [email protected]

What's Included

All competitors in all races will receive a medal on completion of their race.

Competitors’ supporters can gain free entry to this event. It is essential for them to present their spectator ticket in order to do so.

A variety of locally-sourced foods, with a huge variety of refreshments for competitors and spectators alike.

A festival theme with live music, entertainment and an array of retail outlets and concessions.

Health & Safety

We organised a hugely successful socially distanced event at Hever Castle in September 2020 for over 4000 participants and their supporters. This has given us, the Industry but most importantly our participants, the confidence to return to racing in 202!.

We want to reassure all participants that we’ll continue to work closely with Government, governing bodies, venues and suppliers to ensure that our 2021 events are run in accordance with current health and safety guidance.

Our increased health and safety measures cover 5 key principles of education: touch point reduction, density reduction, athlete self-reliance and enhanced hygiene.

Should we be required to put on a socially distanced event, participants will still get the full race experience but with individual rolling starts, 1 competitor every 10 seconds (sometimes greater), restricted time on site either side of your race and possible limit on spectators per athlete only.

We will prepare venue specific documents to send to all participants ahead of the event. These will include details on how to prepare pre-event, arrival timings and movements, swim, cycle, run, festival village and exit.

Course Details

The Chateau de Chantilly 10K follows the same route as the Half Marathon but only requires the participants to complete one loop. 10K is achieved when the Finish Line is crossed in front of the Castle itself.

The Half Marathon and Marathon will see competitors undertake laps of a spectator friendly almost entirely off road 10.5K circuit. Starting in the formal gardens with the Chateau as a backdrop, competitors initially head off on the internal estate tracks towards Porte Vaillant, one of the main gates on the eastern edge of the estate.

The Chateau de Chantilly course offers the flattest of all the courses and the finishing straight, with the castle as a backdrop, leads all runners to the now famous finishing line banquet and a well deserved medal!


Done this event?

First-hand event reviews from people who have been there, done that and got the breathable T-shirt, really help everyone choose their next event.

Add a review


Chantilly, France


For a limited time, subscribe to and get a free tailored training plan and access to your own coach.

A personalised programme worth £75. Unsubscribe instantly anytime.

By signing up you agree to our privacy policy and terms

Image: ©