The Series

Lough Cutra Castle Triathlon

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

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Lough Cutra Castle Triathlon

Saturday 25th and Sunday 26th May 2019

Our first race of the season 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 with a stunning 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. The event offers not only a chance to race but a festival atmosphere with live music, dancing, children’s entertainment, retailers and food.

Lough Cutra Castle Triathlon

About Lough Cutra Castle

The countryside surrounding Lough Cutra Castle 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 26th May 2019

In 2019 Lough Cutra Castle, for the sixth 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 Series

Saturday 25th May 2019

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.

One mile leisure and family swim

Enjoy the beautiful setting of Lough Cutra Castle  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.

10K and Half Marathon

Sunday 26th May 2019

Building on the success of the Castle Run Series in 2018, our Half Marathon and 10K runs will be returning to the iconic Lough Cutra Castle, 2019.

This stunning and unique multi-terrain course will incorporate spectator friendly loops of beautiful countryside, the Castle lake, quaint local villages and of course Lough Cutra Castle itself. Each runner will receive a medal and will be welcomed across the finish line with a banquet of well-earned treats, with live bands, food stalls, a retail area and camping at the castle making the weekend a festival of sporting achievements.

The Half marathon and 10K runs will be returning to all our venues (UK, Ireland and France) in 2019. Set on the most iconic and stunning off road, spectator friendly courses. Come join us for the Series. (Full marathon available at Hever Castle, July.)
Stunning scenery & weather for a swim, cycle & run around the estate of Lough Cutra Castle in Co. Galway, Ireland. Well organised & great inspiration from both half ironman distance triathletes and also young kids doing their own triathlon race!
Jason McChesney

All 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 25th May 2019

Race Name
Race Distance
(Individual / Relay)
Discount Prices
Start time
Super Series Standard (Draft Legal)
1.5km / 40km / 10km
£85 / 125
£64 / 98
Sprint Plus - The Prendergast
800m / 40km / 8km
£95 / 140
£71 / 105
Sprint - The Lady Gregory
750m / 20km / 5km
£90 / 135
£68 / 101
Super Sprint - The Viscount Gough
400m / 20km / 4km
£85 / 130
£64 / 98
Starter Tri - The Castle
200m / 12km / 2km
£70 / 110
£53 / 83
5km Swim
2.5km Swim
1 Mile Swim
1 Mile
Junior (13-15 yrs) - The Teal
300m / 8km / 5km
£44 / 55
£33 / 41
Mixed Relay
250m / 5km / 1.5km**
£100 (team)
£75 (team)
Family mixed relay
250m / 5km / 1.5km**
£75 (team)
£56 (team)

Sunday 26th May 2019

Race Name
Race Distance
(Individual / Relay)
Discount Prices
Start time
Half Iron / Middle Distance - The Gauntlet
1.9km / 96km / 21km
£220 / 270
£165 / 203
Olympic / Standard - The Lough Cutra
1.5km / 40km / 10km
£110 / 150
£83 / 113
HALF Marathon
21.1 km
10 km
Children (8-10 yrs) - The Widgeon
100m / 4km / 0.8km
£33 / 55
£25 / 41
Children (11-12 yrs) - The Cormorant
200m / 4km / 1.8km
£39 / 55
£29 / 41

*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 from15 up to 45 minutes.

**Distance vary 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.

Useful information

Preparation for the event

Please download our new Competitor Guide tailored for the event at Lough Cutra that will help guide you through the preparation for the event.

The Competitor Guide 2018
The Gauntlet Competitor Guide 2018
Race licences and certificates

For the sixth year running the Lough Cutra Castle Triathlon will be a Triathlon Ireland Assured Sanctioned Race.

As such we will be receiving assistance from Triathlon Ireland technical officials on the day and in the run up to the event.

On race day, ALL participants of a multi-discipline event are required to present their valid triathlon governing body (eg TI, BTF, FFT) membership card or One Day Licence. This ‘ODL’ must be purchased before the event from the TI website


Pre-Race Practice


Castle Howard – 1st July

Hever Castle – 9th September



Kids Practice Swim – £5
Adult Practice Swim – £10

Practice swimming in the lake the evening before your race. Not available at Chateau de Chantilly and Hever Castle.

How to book: 

  • During the online registration process.
  • Using our Online Shop.
  • Logging onto MyActive and adding these to your entry.
Spectator Offering

The spectator experience at the Castle Triathlon Series has become almost as famous as the spectacular backdrops and classic courses, and has made passing time before your loved ones finish the race a thing of the past.

Travel, accommodation and directions to the venue

Click the link below to find out everything you need to know about all of our venues.

Trophies, prize money and medals

All competitors in all races will receive a medal on completion of their race.

Each 1st place winner will also receive a suitably themed trophy, and sponsor’s prizes for 2nd and 3rd place. There is a significant prize pot on offer for the Olympic and Gauntlet race distances.

Click below to find out more about what we have on offer.

Rules and Terms and Conditions

Please read and understand the general rules, in particular the cut-off times, before competing to ensure a fantastic race for you and everyone else.

Water quality and temperature

The water quality tests are taken regularly for Lough Cutra Castle’s lake. All tests are undertaken using the EU Water Bathing Directive as the benchmark.

Water temperature

This will be taken nearer the Event. Wet suits will be optional on race day if the water temperature is between 15 and 23 degrees centigrade.

Useful downloads:

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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