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

First timers

Scan the transition area of any Castle Triathlon Series race and it’s easy to see that this is a series populated by both newcomers and experienced triathletes alike.


First timers

For the beginners to all things tri, we’ve created a nurturing environment by providing help from the moment you sign up to the unforgettable moment when you break the tape at the finish line.

We even have a race specifically for you called The Starter Tri. This is a great place to start your triathlon career. With just a 200m swim (thats 25 lengths of your average local swimming pool), literally an out and back, a quick run up the hill to your bike in your wetsuit, followed by a quick change into your bike stuff and then out onto the bike course (12km or thereabouts). There will be other cyclists out there with you and loads of marshals to show you the way. Finally, after a brief change into your running stuff (that may simply mean just taking off your bike helmet) a 2km run, barely out of sight of the Finish in front of the castle at any point and then a sprint across the line to complete hopefully your first of many races!

Our training partners, theTriLife.com, offer a host of training plans and days, from a four-month Long-distance plan for the Bastion to training days for novice athletes. The experts at the Trilife.com offer comprehensive and accessible training plans for every race distance in the series and also host training days at each of the castle venues a number of weeks before the race.

For our youth athletes, we provide a number of open-water acclimatisation sessions for anyone new to the lake swim section of the race. Each training day also offers a transition training session that’ll ensure that all participants will know their T1 from their T2 by the finale.

We’ve also partnered with the triathlon specialists 2XU, British Bike Hire and Yellow Jersey and a host of other brands to offer equipment and support for your race. Having the right equipment (and insurance) will help your passage to the finish. Also on offer is the hiring of triathlon wetsuits, road bikes for adults and mountain bikes for children.

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