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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.


Tri Training Harder have partnered with Castle Triathlon series to deliver a brand new coaching opportunity available to all athletes taking on one of the iconic castle series event. There are two elements to this training offer:

Join the FREE Online Community group to give you access to coaching and training content, along with an opportunity to “meet” and motivate fellow Castle Series competitors.

Sign up for 6-month training plan, plus a bonus 4-week preparation plan and a 4-week recovery plan.a

Yonda Sports

Yonda Sports are the official 2021 Swimwear and Wetsuit partner for all Castle Series events. Our wetsuits have been built to enhance your performance with technical neoprene panels, the right balance of flexibility and buoyancy and will aid your swim style. As a British brand, we offer swimwear, wetsuits, goggles, trisuits and accessories to compliment your performance as you race towards the finish line.

Castle Series fans get a 15% discount on all swim related purchase*. Code details can be found in your registration confirmation email. Alternatively sign up to our NEWSLETTER.

*discount does not apply to the very competitively priced wetsuit hire.

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. If you haven’t already purchased a medal insert, simply log-in to your Active account, find your event and use the “PURCHASE MERCHANDISE”.

These will be posted to you after the event.


Camping at the Venue

Why not enjoy the unique experience of camping in the castle grounds to complete your tri weekend break? The best way to book is to log-in to your Active account find your event and use the “PURCHASE MERCHANDISE” button to add Camping.



Event Day Insurance

Our event day insurance has been created by the team at Yellow Jersey Insurance to cover your race day. Our group policy, if you opt-in, covers you for the re-imbursement of your event entry fee should something unforeseen prevent you from participating (e.g. a new injury). The group policy also covers bikes on the day of the event for damage whilst racing and theft from transition (including overnight).

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 is the official Bike Hire Partner of the Castle Series.

Online yoga package - Yoga for Runners

Strengthen the muscle groups needed to optimise your race day. Stay flexible and injury free. Our package has over 25 classes ranging between 5-60 minutes to suit your training schedule. The yoga poses stretch and strengthen by engaging all your muscles, so will be beneficial for cycling and swimming as well.


Support our Charities

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

Simply log-in to your Active account, find your event and use the “PURCHASE MERCHANDISE”.

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; from first timers, old timers, juniors, female focus, elites, tri clubs, corporates, there’s a race for everyone!

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Trade your time for a free race place! We offer a Volunteer Scheme, whereby a free race is given in return for a day’s marshalling at any one of the Castle Triathlon Series events. (terms apply)

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