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

Race Preparation

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.


Nutrition advice

We are lucky enough to have some great partners who have a wealth of knowledge and products to share with you.

You will find water and feed stations stocked with High5 at all our events with nutrition and energy drinks provided to Gauntlet and full iron distance triathletes. Please see the Competitor Guides for full details.


High5 sports nutrition Castle Triahtlon Series


Do you want to enjoy your sport more? Combining a practical no-nonsense approach, rigorous testing by scientists in the lab and feedback from world-class athletes competing in the world’s toughest events, guarantees that you can rely on HIGH5 products to help you optimise your performance and enjoy your sport more.

The HIGH5 product range includes drinks, gels and bars: check out the full range here.

HIGH5 has developed step-by-step nutrition guides for each sport, race distance, race day weather and athlete body-weight. The triathlon nutrition guides are practical, easy to follow and ensure the optimum performance boosting intake of carbohydrate and caffeine. If you follow these guides you will race substantially faster and further:

Special Offer:

Great value trial pack: The HIGH5 Selection Pack contains more than £23 worth of award winning products including EnergyGel, IsoGel, EnergySource and Protein Recovery. Get your pack for only £10 (+ FREE Shipping). At the checkout use the code castletri. As the shipping option select “Free Shipping For Trial Packs”. UK and NI customers only.

HIGH5 Sports nutrition Castle Triathlon Series
BeetActive Performance Nutrition Castle Trithlon Series


Beetroots are a rich source of dietary nitrates. Supplementation with these can lead to a more efficient use of oxygen during energy production, ultimately leading to an increased tolerance to exercise.

Results from research examining a range of exercise modalities shows that consumption of beetroot juice can lead to a significant boost (5-15%) to endurance performance. BeetActive is a great tasting 100% natural beetroot concentrate, rich in dietary nitrates (229mg per serving). We recommend taking a 30ml serving of BeetActive diluted 250-500ml of water two hours before training or an event.

Can beetroot juice help get a PB?


CherryActive Recovery Nutrition Castle Triathon Series


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

CherryActive is the natural way to help all serious athletes get the most from their training week. Take 30ml of CherryActive with water, after your training sessions, and notice the difference in your recovery and performance!

Want to recover faster?


Sports Hydration Vitacoco Castle Triathlon Series

Vita Coco

Perfect for pre and post race day hydration, Vita Coco, 100% Natural Coconut Water is based on one single ingredient: fresh coconut water.

Staying well hydrated is key to maintaining fitness and achieving sporting success, and Vita Coco Coconut Water is loaded with naturally occurring electrolytes and bursting with potassium allowing race goers to hydrate naturally. What’s more there are no artificial colourings, flavourings and sweeteners added, unlike traditional sports drinks, making it the ideal hydration option for Triathlon experts and first time racers alike. The natural coconut water is taken straight from young green coconuts, meaning that Vita Coco Coconut Water is the ideal option to keep you naturally energised and fresh throughout the months of training sessions as well as over the finishing line. With this partnership, Vita Coco will be present at the end of the race to reward everyone’s efforts with a thirst quenching Vita Coco Natural Coconut Water.

#swearbyit Everything coconut!

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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