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

The Series

Lough Cutra Castle Triathlon

Arguably the finest castle in the series – Lough Cutra – provides a fitting backdrop for the curtain raiser of the Castle Triathlon Series.

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Lough Cutra Castle Triathlon

Saturday 26th and Sunday 27th May 2018

This first race sets the scene for a competitive and fun series, hosted within the beautiful grounds and surrounding area of stunning South Galway. What’s more, the race coincides with a Bank Holiday in the UK and it is also the first weekend of the UK school half term, making it an ideal break for sporty families.

All of the races at Lough Cutra Castle kick-off by launching into an open-water swim in the lake, transitioning into a bike route which circumnavigates Lough Cutra itself. The half iron gauntlet cycle takes in the beautiful Burren national park.

Lough Cutra Castle Triathlon

About Lough Cutra Castle

The countryside surrounding Lough Cutra contains evidence of a history dating back to the Irish-Celtic mythology of the Tuatha Dé Danaan.

Old churches, cells and monasteries are prolific in the area, with some of the islands on the lake containing the remnants of stone altars.

The history of the actual estate can be traced back as far as 866 A.D. when the ruined church of Beagh was sacked by the Danes and war raged through the district for nearly 1,000 years.

The Castle itself was built during the Gothic revival period and is idyllically situated overlooking the Estate’s 1,000 acre lake (the largest privately owned lake in Europe), home to the open-water swim of the Lough Cutra Castle Triathlon.

Go long for the Gauntlet

Sunday 27th May 2018

In 2018 Lough Cutra, for the fifth year running will see The Gauntlet, a middle-distance race, push competitors to their limit via stunning 1.9km swim, 96km bike ride and 21km run.

This race distance had a hugely successful launch across the Series in 2014 with over 1000 sign ups. Since then it has gone from strength to iron strength doubling in size with hardened triathletes and newcomers to the triathlon side-by-side on the start line. In 2016 we were proud to host the Gauntlet as part of the Triathlon Ireland Vodafone National Series and in 2017 the Gauntlet offered 5 qualifying places in each Age Group for the 2018 ETU European Middle Distance Championships. 

Castle Swim in association with Outdoor Swimmer

Saturday 26th May 2018

The swim only event provides the choice of three different distances: 5km 2.5km and 1mile (see price table below) and boasts a unique and stunning swim route in all the stunning castle lakes.

The swim described by many triathletes as the ‘best open water swim ever completed’ will now be open to outdoor swimmers as an event in its own right.

All swimmers will be provided with timing chips and the races categorised into wetsuits and non-wetsuits. Prizes will be awarded for the top three male and female competitors in each distance.


One mile leisure and family swim


Enjoy the beautiful setting of Castle Howard at your own pace. Swim any stroke you like (breaststroke encouraged), swim and chat with friends as you go around. Don’t worry about how long it takes (however time limit set at 90 minutes), just enjoy it. Under 16s welcome if accompanied throughout by a competent responsible adult.

Use the button below to register your interest and grab an early bird discount!

Castle Half Marathon

Sunday 27th May 2018

You can take on the half marathon at all our venues in 2018 on the most iconic and stunning on and off road courses in the UK, Ireland and France.

This run promises one of the most stunning on and off road course in the UK. This two laps course takes in two castles, two lakes, quaint Kentish villages with oust houses and castle grounds with spectators and locals cheering you on all the way! And there is a big celebration with medal and finishing line banquet as you cross the finishing line.

Use the button below to register your interest and grab an early bird discount!

Mixed Team Relay - New race in 2017!

This new race format, taking place on the afternoon of Saturday 27th May, will see four person teams; two males and two females, each completing a 250m swim, 5km bike and 1.5km run as part of a tag team.

Mixed Relay has proven extremely popular with athletes of all standards and allows regular age groupers and more advanced athletes to race together. The minimum age requirement for athletes is 15 years. There is no upper limit upper age limit or ability for those taking part.

Participants who are racing any other distance over the weekend can get a 50% discount on the full price of the Mixed Team Relay entry.  Email us here to apply.

We are delighted that this event will include the National Mixed Team Relay Club Championships. The race will be run to ITU standards and all participants must hold a full TI Licence and team members must belong to the same club.

I have previously done Castle Series Triathlons but not standard distance, this year I did Ireland, I loved it! There was fog which affected the Gauntlet races prior to my race and they had to delay but my race went ahead later than planned and it was awesome. Safety first, at 8am you couldn’t even see the buoys in the lake! The lake was cleanish compared to others! The roads were brilliant for the cycle and the run route was varied. I love the castle series, the organiser Brian is fab, will help anyone out if he can! The support team is ace, the will do anything to help anyone out as well. Thanks again.
Dawn Malloy

Take a look at how our previous triathletes rate Lough Cutra

Race distances and pricing

To compete in the Lough Cutra Castle Triathlon you can enter either as an individual, a relay team of two, or a relay team of three. The Junior and Children’s races follow the same format. Relay entries can be all male, all female or mixed.

Saturday 26th May 2018

Race Name
Race Distance
(Individual / Relay)
Discount Prices
Start Time
Sprint Plus - The Prendergast
800m / 40km/ 8km
€75 / 115
€56 / 86
Sprint - The Lady Gregory
750m / 20km / 5km
€70 / 110
€53 / 83
Super Sprint - The Viscount Gough
400m / 20km/ 4km
€65 / 105
€49 / 79
Starter Tri - The Castle
200m / 13km / 2km
€55 / 95
€41 / 71
5km Swim
2.5km Swim
1 Mile Swim
1 Mile
Junior (13-15 yrs) - The Teal
300m / 8km / 2.4km
€35 / 45
€26 / 34
Adult mixed relay
250m / 5km / 1.5km**
€135 (team)
€101 (team)
Family mixed relay
250m / 5km / 1.5km**
€75 (team)
€71 (team)

Sunday 27th May 2018

Race Name
Race Distance
(Individual / Relay)
Discount Prices
Start Time
Half Iron / Middle Distance - The Gauntlet
1.9km / 96km / 21km
€190 / 225
€143 / 169
Olympic / Standard - The Lough Cutra
1.5km / 40km / 10km
€85 / 125
€64 / 94
HALF Marathon
21.1 km
Children (8-10 yrs) - The Widgeon
100m / 4km / 0.8km
€25 / 45
€19 / 34
Children (11-12 yrs) - The Cormorant
200m / 4km / 1.8km
€30 / 45
€23 / 34

*Start times are approximate and shown here as a general guide. These are subject to change.  Depending on number of participants, there may be multiple waves for each race distance separated by intervals from 15 up to 45 minutes.

**Distance varies slightly at each venue

Entrants will be notified of their wave time via email 2 weeks prior to the event.  We advise that entrants arrive at least 1 – 1.5 hours before their wave time.  There’s an option to request specific waves during registration.  Relays go off in the final wave of their distance.

Race day information

Saturday 6th May 2017

In this section you will find everything you need to know about the race day, including wave start times, registration timings, spectator entry, camping info and water temperature readings etc.

2017 Results

Full Races Results will be posted here on the evening of the event and we guarantee amazing shots of you in action with our new partner, marathon-photos.com. Click here for competitor photography.


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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