Pop-up City Triathlon
24-27 April 2017

Lough Cutra Castle
27/28 May 2017

Cholmondeley Castle
24/25 June 2017

The Festival of Endurance at Hever Castle
9 July 2017

Castle Howard
22/23 July 2017

Château de Chantilly
26/27 August 2017

Hever Castle
23/24 September 2017

Schools Roadshow
July 2017

Online Shop

Castle Triathlon Series Merchandise

NEW merchandise range!

Check out our new range of merchandise including base layers, t-shirts, hoodies and much more.


NEW Speedo triathlon range

Check out Speedo’s new stunning range of triathlon gear for all levels including wetsuits, tri suits and swim caps.  It’s the perfect kit to help you look and feel tri ready!

Wetsuit hire

Hireawetsuit have teamed up with Speedo to bring all competitors of the Castle Triathlon Series the ultimate quality, service and value for money for wetsuit hire.
Children hire options also available.

Hire your wetsuit today and get 10% off with your Castle Triathlon Series discount. Use discount code: CASTLEHIRE


Simply world class race wheels. Wheelscience provide athletes with built to order, fully customisable and race proven carbon wheels. With time savings of almost 2 minutes over 40km or nearly 9 minutes over an Iron distance race, Wheelscience wheels will make you faster.

Free shipping anywhere in the world and Castle Triathlon Series competitors can receive 15% discount with code: CTSWS1517.

Sportswear for kids from everactiv

everactiv are a new UK sportswear brand for young people. Their first range is for girls and features leggings, shorts, long sleeves and t-shirts. Their co-founder is a professional triathlete – the clothing is made for athletes, by athletes. It is technical, functional and stylish. Use code CASTLETRI at www.everactiv.com for an exclusive online 15% discount.

Six Physio Advice

This multi-discipline sport can mean more injuries and niggles, so book a tri-screening at one of Six Physio’s London clinics or Ask the Guru for immediate personal advice here. Call Six Physio and quote code CTS20 to receive 20% off Initial Physio appt (1hr), massage or Sports Assessment.

Medal inserts

Get your times on your medal after the event

You can personalise your well deserved race medal with a medal insert, showing your name and overall timing.

These will be posted to you after the event.

Bike Servicing and Cycling Parts

Gain peace of mind with a bike service or comfort bike fit before taking part in your triathlon. You can also enjoy cycling arts and items from the Velo House shop with a 16% discountuse code VELOHEVER16 when completing your orders.


Support our Charities

Please support our National and Local Charities and make a donation online.

British Bike Hire

Bike hire

Hiring a bike takes the hassle of transporting your own to each event leaving you free to enjoy some well earned rest and recuperation after your ride.

British Bike Hire are the official Bike Hire Partners of the Cholmondeley Castle Triathlon, the Castle Howard Triathlon, and the Hever Castle Triathlon.


Camping at the Venue

Why not enjoy the unique experience of camping in the castle grounds to complete your tri weekend break?

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