Letterkenny, Donegal
Letterkenny 24/7 Triathlon Club supports swimming, cycling and running in Donegal, from first triathlons to middle-distance racing.
Register this clubFind a club by name, location or sport. Browse its public listing before registering as an authorised club representative. Affiliated and unaffiliated clubs can register.
94 clubs · Page 1 of 2
Dublin
3D Triathlon Club is a North Dublin club founded in 2001, with coached swim, bike and run sessions around the city centre and Phoenix Park.
Register this clubDublin
AMS Triathlon, founded in 2011, is a Dublin multisport club serving the Dublin 7 and Dublin 15 areas, from first triathlons to long-distance challenges.
Register this club
Armagh
Armagh Pikekickers Triathlon Club brings swimmers, cyclists and runners together in County Armagh and organises Tri the Orchard at Loughgall.
Register this clubAthlone, Westmeath
Athlone Triathlon Club brings swimming, cycling and running together in Ireland's Midlands, with a junior section and the beginner-focused I TRI’d event.
Register this clubKildare
Athy Triathlon Club was founded in 2012 in south Kildare, supporting triathlon, duathlon and aquathlon alongside individual swimming, cycling and running goals.
Register this clubBallybunion, Kerry
Ballybunion Triathlon Club brings multisport activity to the north Kerry coast, with a local duathlon and an open route for membership enquiries.
Register this clubDublin
Belpark Triathlon Club is based around Rathfarnham in south Dublin, with roots in a 1986 running group and a history of national individual and team titles.
Register this clubFermoy, Cork
Blackwater Triathlon Club was formed in Fermoy in 2007 and supports triathletes across north and east Cork, from beginners to experienced racers.
Register this clubKillaloe / Ballina, Clare
Boru Tri Club supports adult swimming, cycling and running around Killaloe, Ballina and Lough Derg.
Register this clubNewtownabbey, Antrim
Brown Shoes Triathlon Club grew from Newtownabbey's Try a Tri sessions and offers pool coaching, cycling and support for newcomers in Northern Ireland.
Register this clubCarlow
Carlow Triathlon Club offers swimming, cycling and running from Carlow town, with seasonal pool and River Barrow training and support for first-time triathletes.
Register this clubCarrick-on-Suir, Tipperary
Carrick-on-Suir Triathlon Club has a long association with swim, bike and run racing along the River Suir in County Tipperary.
Register this clubMayo
Castlebar Tri Club is a County Mayo triathlon club with documented involvement in beginner participation and regional swim, bike and run community activity.
Register this clubCavan
Cavan Triathlon Club serves Cavan and the surrounding area, with documented beginner programmes and investment in swimming-support equipment.
Register this clubClonmel, Tipperary
Clonmel Triathlon Club offers swimming, cycling and running in County Tipperary, with seasonal coaching, junior membership and the Camida sprint triathlon.
Register this clubCobh, Cork
Cobh Triathlon Club is a volunteer-run swim, bike and run club in County Cork, with a junior section and the Jailbreak triathlon's Spike Island swim.
Register this clubThurles, Tipperary
Collins Cycle Centre Triathlon Club is based in Thurles, County Tipperary, with a public club enquiry email and participation in Triathlon Ireland's 2026 Club Community League.
Register this clubCork
Cork Triathlon Club offers multisport training and a junior section, with a history shaped by its King of the Hill and Lost Sheep triathlons.
Register this clubCromane, Kerry
Cromane Triathlon Club is an adult multisport club in County Kerry and a participant in the South-West Ireland tri-club community.
Register this clubCrosshaven, Cork
Crosshaven Triathlon Club serves triathletes in County Cork, with national recognition for its work welcoming beginners and returning athletes.
Register this club
London, Greater London
Crystal Palace Triathletes supports adult and junior swimming, cycling and running in south-east London, with coached trials and club racing.
Register this clubSwanlinbar, Cavan
Cuilcagh Triathlon Club brings together swimmers, cyclists and runners around Swanlinbar and Cuilcagh Mountain, with a cross-border membership catchment.
Register this clubDrung, Cavan
DB Triathlon Club connects swimming, cycling and running in County Cavan, with a documented role in a collaborative lake-swimming series around Cootehill.
Register this clubDownpatrick, Down
Down Triathlon Club serves Downpatrick and County Down with swimming, cycling and running, including a junior section and coached community training.
Register this clubDrogheda, Louth
Drogheda Triathlon Club offers adult swimming, cycling and running in County Louth, with coached sessions, group rides and a route into first-time triathlon.
Register this clubDublin
Dublin University Cycling and Triathlon Club brings student cyclists and triathletes together at Trinity College Dublin for coached training and social rides.
Register this clubCork
East Cork Tribe combines swimming, cycling and running, with a documented 2026 newcomer programme starting from Mogeely.
Register this clubEdenderry, Offaly
Eden Tri Club is an adult triathlon club in Edenderry, County Offaly, with documented local swimming and national duathlon participation.
Register this clubEnnis, Clare
Ennis Triathlon Club supports swim, bike and run participation in Ennis, County Clare, with junior and adult membership listed by Triathlon Ireland.
Register this clubDublin
Fingal Triathlon Club has offered junior and senior multisport training across north County Dublin since 2009 and organises racing in Skerries.
Register this clubGalway
Galway Triathlon Club provides coached swimming, cycling and running for Galway city and county, from first-time triathletes to experienced long-distance competitors.
Register this clubGlin, Limerick
Glin Tri Club was formed in 2017 on the Shannon Estuary in County Limerick, with local swim and cycle resources and its own triathlon.
Register this clubCarrickfinn, Donegal
Hell Yeah Triathlon Club is listed in Carrickfinn, County Donegal, Ireland, and appears in Triathlon Ireland's 2026 Club Community League.
Register this clubAntrim
Hi Elbow Triathlon Club is an Antrim swimming, cycling and running club with a documented history of organising Brown’s Bay Beast.
Register this clubBelfast, Antrim
Invictus Triathlon Squad is a Belfast club founded in 2011, with coached swimming, group cycling and members ranging from beginners to age-group competitors.
Register this clubCoalisland, Tyrone
Island TC is an adult triathlon club associated with Coalisland in County Tyrone, Northern Ireland, and listed in Triathlon Ireland's club network.
Register this clubKenmare, Kerry
Kenmare Triathlon Club has a multisport history in County Kerry stretching back to 2006, including the Little Bo Peep triathlon.
Register this clubKilkenny
Kilkenny Triathlon Club grew from the city’s inaugural 2010 triathlon, launching in 2011 with coached swimming, running and multisport training for adults.
Register this clubKillarney, Kerry
Killarney Triathlon Club offers swimming, cycling and running in County Kerry, with seasonal lake and pool training and opportunities to try sessions.
Register this clubKinsale, Cork
Kinsale Triathlon Club combines swim, bike and run training with local races, volunteer activities and social outings in County Cork.
Register this clubLanesboro, Longford
Lanesboro Triathlon Club serves the Lanesborough–Ballyleague community on the Shannon, with adult and junior training and the Two Provinces event.
Register this clubLimerick
Limerick Triathlon Club was founded in 1984 and supports multisport across Ireland’s Midwest, organising Kilkee’s Hell of the West and the Joey Hannan Memorial.
Register this clubBallina, Mayo
Liquid Motion Triathlon Club serves Ballina and north Mayo with pool, track and cycling sessions and introductory routes into multisport.
Register this clubLisburn, Antrim
Lisburn Triathlon Club is a Northern Irish multisport club with a documented duathlon-organising role and historical links to international triathlete James Edgar.
Register this clubLongford
Longford Triathlon Club was established in 2010 and provides swim, bike and run training in Longford town and the surrounding area.
Register this clubRoscommon
Lough Key Triathlon Club is a north-west Ireland multisport club associated with Boyle's Lough Key race and beginner training in Carrick-on-Shannon.
Register this clubDonegal
MSC Tri is a triathlon club serving south Donegal, north Leitrim, north Sligo and north Fermanagh, with swimming, cycling and running across the region.
Register this clubDirectory evidence badges describe the listing. Representative identity and authority are checked separately during registration.