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
July 2018

Take Part


With an upwardly mobile fraternity and wages well above the national average, triathlon has replaced golf as the number one sport of the boardroom.



With a huge number of Type A personalities and high-fliers at the peak of their business careers in the field, the races offer a platform to network and be seen, not forgetting the option of post-race bragging rights.

The Castle Triathlon Series in 2018 will offer the opportunity for companies to have their own bespoke wave. We’ll also offer a package including a hospitality marquee with delectable food and drink for company members for both pre- and post-race refreshment.

Key companies who have embraced the series since its formation are Morgan Stanley, Reckitt Benkiser, Markel Insurance, KPMG as well as 150 BBC Worldwide staff, family and friends.

If you’d like to be a sponsor of this internationally renowned race series, or you would like a corporate wave at any of our events, please email brian@castletriathlonseries.co.uk.

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.

Find out more


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.

Find out more

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.

Find out more


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

Find out more