Race Preparation | Castle Triathlon Series | Castle Triathlon Series

Race Preparation

To get the most out of your event day, we recommend being completely prepared. From completing the right training schedule, taking out the right insurance and having the right gear. See our experts offering’s here.

Online Training Plan

Tri Training Harder deliver a brand new coaching opportunity with two elements to their concept:

The Online Community is FREE to all athletes and will give you access to coaching and training content, along with an opportunity to “meet” and motivate fellow Castle Series competitors.

The Online Training Program is a paid for, interactive 6 month plan delivered by the professional triathlon coaches at Tri Training Harder along with access to a closed online group of athletes with an experienced team of coaches on hand to guide you through the training plan to race day

Training plans and Training days can be purchased through the online race registration booking form. Thetrilife.com 20% discount will be automatically applied.

Alternatively these can also be purchased from thetrilife.com website.


Yonda Sports, the official 2021 Swimwear and Wetsuit partner of the Castle Series, offer swimwear, wetsuits, goggles, trisuits and accessories to compliment your performance as you race towards the finish line. A British brand that believes in putting your performance at the focus of what they do.

If you need to hire a bike for your race, or even for your training leading up to the event, British Bike Hire are on hand to give you all the advice you need as well as the very best hire options available.


Insurance is a subject we get asked a lot of questions about so we have created a dedicated page to answer all your questions.

Yellow Jersey Insurance event day insurance covers your race day. Their group policy, if you opt-in, provides cover 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).

Nutrition advice

Nutrition is often described as the fourth discipline of triathlon as it plays such a key role in helping you around the course, whether a sprint or full iron distance.

Rigorous testing by scientists in the lab and feedback from world-class athletes, guarantees that you can rely on HIGH5 products to help you optimise your performance and enjoy your sport more.

CherryActive is an all-natural, antioxidant-rich cherry concentrate, proven to speed recovery and reduce soreness, after training.

YogaTonic UK

YogaTonic UK, run by triathlete couple Tim and Shannon, provide an online yoga course allows you to fit in your stretches around your training – whether you are a competitive club runner, looking to complete a challenge or to keep active and fit as well as injury free. Hopefully our programme will help you integrate a yoga routine into your weekly training schedule.

From tips and advice from our experienced ambassadors, to information on the best equipment to suit your swimming needs; everything you could want to help you with the swim leg of your triathlon can be found right here!

Physio Advice

Six Physio will always treat patients case by case, there is no one-size-fits-all. People are made differently: you swim, bike & run differently and you also work differently, so you need to be looked after differently.

From tips and advice from our experienced ambassadors, to information on the best equipment to suit your swimming needs; everything you could want to help you with the swim leg of your triathlon can be found right 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; 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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