Lough Cutra Castle
Triathlon and Multisport Festival, 23-24 May 2026
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Join us at the Lough Cutra Castle Multisport Event to race through the beautiful grounds and surrounding area of stunning South Galway. Pick your discipline - triathlon, duathlon, aquabike, aquathlon, swim and run - and choose a distance from starter to elite. Recruit your friends and celebrate completing your challenge in our festival village.
We are delighted to introduce Alzheimer’s Research UK as our new National Charity partner. Get a charity place and help us raise much needed funds.
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.
This family friendly event features some truly iconic courses in the west of Ireland. The weekend will host a vast range of races for all ages and abilities.
Whether you’re 9 or 90 years old, a first-timer or an elite, you can pick from our triathlon, duathlon, aquabike, aquathlon, run and swim races at Lough Cutra Castle Multisport Event.
View our 2025 Series Competitor Guide and 2025 Half Iron Course Guide. Use the buttons below for full list of races and course maps. The 2025 Race Report gives you a flavour of what to expect on race day.
Lough Cutra Castle event is sanctioned by Triathlon Ireland (TI). Competitors in triathlon / multisport races are required to produce either a valid membership licence or purchase a TI One Day Membership (ODM).
We’re hosting an exciting Mixed Team Relay event at 2.30pm on the Saturday 23rd of May at Lough Cutra, where teams will go head-to-head in a fast-paced, action-packed race — all for the chance to win a fantastic prize for the winning team!
We are delighted to have partnered with Alzheimer’s Research UK for another year and urge all our participants to support their efforts to help find a cure for dementia, a condition that affects millions worldwide.
Together, we can accelerate scientific discoveries, improve treatments, and create a future free from the fear and heartbreak of Alzheimer’s. You can support Alzheimer’s Research UK by booking a charity place and committing to fundraise or setting up your own fundraising page, or simply making a donation.
12-13 years triathlon and 14-15 years triathlon is a tarmac bike course on closed roads
9-10 years triathlon and 11-12 years triathlon is off-road, mountain bike advisable
Take advantage of our payment plan and split the payments of your race fee over 3 months. Look for option at checkout.
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