- Sun 25 May 2025
- 20% off
Run Half Marathon
20% off with code
10:30
Age 17 & over
€45
- 21.1 km trail running

Event overview
This event features some truly iconic courses in the West of Ireland.
Pick your discipline from triathlon, duathlon, aquabike, aquathlon, swim or run - and choose a distance from starter to elite. Recruit your friends and celebrate completing your challenge in the festival village!
The weekend will host a huge range of races for all ages and abilities so whether you’re 9 or 90 years old, a first-timer or an elite, you are warmly invited to come and join in.
This event is part of Lough Cutra Castle Triathlon and Multisport Festival.
Event photos
Event video
- All fitness levels
- Event village
- Families
- Newcomers
- Spectators
- Teams
Anyone of any gender, age or ability is welcome and safe to take part in a race. First-timers and old-timers, the next generation and the elites, clubs and corporates, schools and seniors are welcome. The more the merrier.
Clubs
Discounts and club event areas.
All sports clubs are welcome to take part in the events and group discounts are available, tailored waves for club championships, trading places scheme, as well as allocating you a place to pitch gazebos for a meeting spot in the event village.
Corporates
Creating healthy teams.
There are opportunities for companies to experience the events together – a great way to build team morale and friendly competition. This can include group booking discounts, pre- and post-race refreshment from your own hospitality marquee, your own company wave, custom kit and more.
Accessible racing
Racing for all.
This event has an ethos of accessibility and inclusivity and wants to be able to offer a race for everyone. Many inspirational paratriathletes have taken part in one of the Castle Triathlon Series races over the years including Paralympian Matthew Emmerson, the Band of Brothers and Band of Sisters – injured and wounded service men and women.
First timers
Compete or complete.
There are starter distances across all disciplines and a very supportive community of athletes and marshals to help you feel confident and comfortable completing your first race.
Juniors
The next generation.
From jumping in a lake, cycling through the woods to running around a castle, there are unforgettable, accessible races for 9–16 year olds at amazing locations.
Elites
Races for champions.
Rising stars and athletes have raced in the Castle Race Series from the very beginning. Many of these triathlon events host qualifying and national championships races in partnership with the BTF, TI and FF Tri, and the obstacle race is now a OCR World Championship Qualifier.
Female focussed
Closing the gap.
Over the last few years female participation has been increased to 38% by adding a greater variety of distances, female-only waves, launching the virtual series and making strategic partnerships.
Armed Forces
Race savings.
Discounts are offered on races to those who are serving or have served in the armed forces.
- Rural
Event HQ
Lough Cutra Castle
Gort
H91 H2KF
Ireland
Lough Cutra Castle Multisport event is the backdrop to this festival of triathlon and multisport event in County Galway.
The Castle, built during the Gothic revival period and once home to now King Charles during a 3-day visit to Ireland, is idyllically situated overlooking the Estate’s 1,000 acre lake; the largest privately owned lake in Europe and home to this event’s open-water swims.
Throughout the weekend, athletes and spectators will be able to enjoy the grounds and a fun-packed festival village featuring live music, shopping, food and drink, children’s entertainment, yoga and more.
- First aid
- Marshals
3 laps of the 7K route (orange line).
Map

This event appreciates that the health of the planet is a huge challenge and has made commitments to tackle these challenges which they will continually measure, evolve and improve.
These environmental commitments include:
- Reducing material use - prioritising using less
- Reusing - finding better alternatives
- Recycling - wherever possible
- Being a responsible buyer - sourcing sustainably with an ethical framework in place
- Chip timing
- Medal
Race pack Includes
- Race bib
- Numbered labels
- Chip timing device
- Event wristband
Available on the day
This event is more than just the race! There's an event village for you and your supporters to enjoy, featuring:
- Shopping village
- Drinks and refreshments
- Delicious food
- Live music
- Prizes for the fastest athletes
- Opportunity to purchase official event merchandise
- Opportunity to purchase official race photos
Take part for the charity of your own choice if you wish!
- Age 17 & over
- Entries open
- Enter online
Entry fees
Entry fee
€45.00
Completed the mixed team relay for a bit of fun with a 1 member who never completed a triathlon (I think she's hooked now) and another girl who has done just a few and it was a great team event that we pushed each other on. this is a great event to do to be competitive or just for a bit of fun. well organised and great course. Gabriel W
Great race. Love the finish in front of the castle, and the jellies! See ye next year! John O
Brilliant. Emmanuel H
Very well organised. All crews and Marshalls were very helpful and encouraging. Lovely course. Joe L
First triathlon here, but had a few aquathlons before here. Great organization as usual, marshalls guide us well and things just go smoothly. Everything well marked. I enjoyed it a lot! Thank you for keeping high standards! You guys rock. Tomasz C
Outstanding. Nick H
It was my first triathlon and I throughly enjoyed it. It was well organised and a smooth process throughout. I really liked that there numerous areas for my supporters to see me. I definitely would do an event again. Aoife S
I had entered the marathon but didn't feel up to it so switched to the 10k. Staff were so lovely and made it such an easy transition. Everything was run so well from the parking, bib pick up, race briefing, course marking and finish were all fantastic. Could not fault anything at all. Highly recommend! Sandy C
I arrived from Germany with a bad knee and was very worried that I wouldn't be able to run. And then I met this great team ♥️ I would like to thank everyone for your warmth, friendliness, encouragement and support before, during and after the run. You are incredible. If I ever get to run a half marathon again, I will come back and do it with you. Thank you for everything. Your Tanja. Tanja G
1st time at this event and 1st 5k swim best ever. Couldn't fault anything about the whole event for me. Thanks for such a great experience. Judith xx Judith M
Reviews thanks to RaceCheck
Other races at event
- Sat 24 May
- #1 of 24
Triathlon Sprint Plus
09:00
Age 17 & over
€115
- 800 m lake swimming
- 40 km road cycling
- 8 km road running
- Sat 24 May
- #2 of 24
Triathlon Sprint
09:30
Age 16 & over
€100
- 750 m lake swimming
- 20 km road cycling
- 5 km road running
- Sat 24 May
- #3 of 24
Triathlon Super Sprint
10:45
Age 16 & over
€95
- 400 m lake swimming
- 20 km road cycling
- 4 km road running
- Sat 24 May
- #4 of 24
Triathlon Starter
11:00
Age 15 & over
€80
- 200 m lake swimming
- 12 km road cycling
- 2.5 km road running
- Sat 24 May
- #5 of 24
Triathlon 16-17 years
09:30
Age 16-17
€70
- 750 m lake swimming
- 20 km road cycling
- 5 km road running
- Sat 24 May
- #6 of 24
Duathlon Sprint
10:15
Age 16 & over
€75
- 5 km trail running
- 20 km road cycling
- 2.5 km trail running
- Sat 24 May
- #7 of 24
Aquabike Sprint
10:30
Age 16 & over
€65
- 750 m lake swimming
- 20 km road cycling
- Sat 24 May
- #8 of 24
Aquathlon Sprint
10:30
Age 16 & over
€50
- 750 m lake swimming
- 5 km road running
- Sat 24 May
- #9 of 24
Swim 1 Mile
12:30
Age 13 & over
€45
- 1 mile lake swimming
- Sat 24 May
- #10 of 24
Swim 2.5K
12:15
Age 13 & over
€55
- 2.5 km lake swimming
- Sun 25 May
- #14 of 24
Run Marathon
08:45
Age 18 & over
€64
- 42.2 km trail running
- Sun 25 May
- #15 of 24
Triathlon 9-10 years
14:45
Age 9-10
€35
- 200 m lake swimming
- 4.2 km mountain biking
- 1.3 km trail running
- Sun 25 May
- #16 of 24
Triathlon 11-12 years
14:30
Age 11-12
€40
- 300 m lake swimming
- 4 km mountain biking
- 1.8 km trail running
- Sun 25 May
- #17 of 24
Triathlon 12-13 years
14:15
Age 12-13
€45
- 400 m lake swimming
- 8 km road cycling
- 1.8 km road running
- Sun 25 May
- #18 of 24
Triathlon 14-15 years
14:00
Age 14-15
€45
- 500 m lake swimming
- 12.6 km road cycling
- 2.5 km road running
- Sun 25 May
- #19 of 24
Triathlon Gauntlet
08:00
Age 18 & over
€245
- 1.9 km lake swimming
- 96 km road cycling
- 21 km road running
- Sun 25 May
- #20 of 24
Triathlon Olympic
09:30
Age 18 & over
€125
- 1.5 km lake swimming
- 40 km road cycling
- 10 km road running
- Sun 25 May
- #21 of 24
Duathlon Standard
08:30
Age 17 & over
€80
- 11 km trail running
- 40 km road cycling
- 5 km trail running
- Sun 25 May
- #22 of 24
Aquabike Standard
10:00
Age 17 & over
€70
- 1.5 km lake swimming
- 40 km road cycling
- Sun 25 May
- #23 of 24
Aquathlon Standard
10:00
Age 17 & over
€65
- 1.5 km lake swimming
- 10 km road running
- Sun 25 May
- #24 of 24
Duathlon Middle
08:30
Age 18 & over
€90
- 11 km trail running
- 96 km road cycling
- 10 km trail running
