Pop-up City Triathlon

Lough Cutra Castle
26/27 May 2018

Cholmondeley Castle
23/24 June 2018

The Festival of Endurance at Hever Castle
8 July 2018

Castle Howard
21/22 July 2018

Château de Chantilly
25/26 August 2018

Hever Castle
22/23 September 2018

Schools Roadshow

The Series

The Festival of Endurance

The Festival of Endurance played out in an electric atmosphere on Sunday 9th July 2017.

The Festival of Endurance

Sunday 9th July 2017


We are in complete awe at your performances this weekend from the 1,000 competitors. From all the tri’ers completing their long course tri training, to the 200 half iron distance Gauntlets, 300 half and full marathon runners and of course the hardcore 90 completing The Bastion (including three participants who have now taken part four times!). It certainly felt like a Festival of Endurance with diligent efforts, lots of celebrations and stunning surroundings.

We hope you are bragging to all those who will listen and even more bragging is made by those fundraising for a good cause too. It was great to see that 50 of the competitors were raising funds for Macmillan Cancer Support, its really appreciated and a huge achievement.

We totally loved being part of your life changing events and are so happy for you all. We are still smiling and hope you are too with pride and elation.

Medal inserts, merchandise and more...

You can visit our Online Shop to order medial inserts and Castle Triathlon Series merchandise.

Look forward to seeing you again next year, or perhaps at one of our other events this year!

Hever Castle The Bastion photography

Official Event Photography

We have some amazing pictures of you all around the course.  To help you prolong your memories, please see link to competitor photography below.


For competitor inquiries regarding photos please click here (be sure to chose the Contact Us box at the top right hand corner)


A full breakdown of race results can be found here. If you have any queries please contact Stuweb Timing Solutions here.

Race distances

Race distances

For the absolute beginners and children to the professional triathletes, the Castle Triathlon Series offers a wealth of race distances to suit all levels.

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Hosted at a selection of stunning and iconic castles across the UK, Ireland and France, the Castle Triathlon Series events all promise an inspirational and memorable race experience.

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Take part

We pride ourselves on offering a bespoke and tailored offering for all those wishing to take part and grateful for all those who want to be involved on the day.

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We would always recommend training in preparation for any event, but how much you do, and the style you take is down to you.

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