Ireland
Triathlon Calendar Ireland 2026-2027
Monthly updates for Ireland
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in Ireland for 2026-2027! Our updated list features 21 exciting races across the country. Find your next race in Ireland below and join the running community at these great events! Search for a location or view races near , , , , or .
August 2026
Two distance triathlon on 15 August 2026 in Westport Co Mayo with Olympic and Super Sprint routes around Croagh Patrick Clew Bay and the Westport Greenway.
A sprint triathlon on the Hook Peninsula featuring a 750 m swim, 20 km cycle on a technical course, and a 5 km run, held 15 August 2026.
A new women's aquathlon in Fermoy on 20 August 2026 featuring a 20 minute swim and a 20 minute run, organised by Cork Sports Partnership and Triathlon Ireland.
Sprint triathlon in Phoenix Park with a 750 m swim in the Upper River Liffey, a technical 23 km bike route and a fast 5 km run finishing at the Garda Boat Club.
A 35km multi-discipline event in Newcastle Co Tipperary combining cycling, running and a 0.5km kayak lap with supplied kayak gear and on-site safety cover.
Monthly updates for Ireland
Get new running races (and updates) in your inbox every month.
A half iron distance triathlon around Kenmare featuring a 1900 m swim, an 83 km bike over two category one climbs and a 21 km run that finishes in Kenmare town. The route passes Healy Pass, Caha pass and a short mountain tunnel.
Experience a long distance triathlon featuring a swim in the Lakes of Killarney, a cycle along the Ring of Kerry, and a marathon through Killarney National Park. This eco-friendly event offers both individual and relay entry options.
A multi-discipline adventure race in Mountcharles offering four route options from a family walk to a full running cycling and mountain leg race.
September 2026
Short-course triathlon at Garda College, Templemore on 2 September 2026 with individual and three-person relay entries, chip timing, race T-shirt, meal, and prize categories.
Two race formats at Coosan Point Athlone on 5 September 2026, with sprint and shorter try a tri distances.
TriHub Dungarvan Triathlon takes place on 5 September 2026 with a Sprint distance and published swim, bike and run courses; Sprint entry opens 17 March 2026.
A one day adventure race on Achill Island with three solo course options combining kayak trail run and road bike stages part of the ARI solo series.
A Standard Distance triathlon at Rosslare Beach featuring a sea swim with kayak support, an open-road bike course with safety zones, and a two-loop run.
A sprint triathlon at Port Beach, Co. Louth with a 750 m swim, 20 km bike on closed roads and a 5 km run, plus junior race options.
October 2026
A coastal multisport challenge in Dunfanaghy with two race options and the new Lady Isabella trail on the grounds of Ards Friary, organised as a youth fundraiser.
November 2026
A multi-discipline adventure race in Westport combining running, cycling and a Croagh Patrick mountain hike with two course options and three entry categories.
May 2027
Multisport weekend at Lough Cutra Castle in County Galway offering triathlon, duathlon, aquabike, aquathlon, swims and runs amid the castle grounds.
June 2027
TriAthy returns for its 19th edition on 5 June 2027 at Barrow Quay, Athy, offering multiple triathlon formats including the TA-100, Olympic, Sprint and Try races.
A 68 km multi discipline adventure race in Connemara combining running, cycling and kayaking through Croagh Patrick, Killary Fjord and Westport on 12 June 2027.
July 2027
Half distance triathlon in Waterville on July 10, 2027 featuring a one lap bike through Coomaciste, Sneem, Ballaghbeama and Ballaghisheen and a four lap coastal run.
