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 11 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 .
September 2026
A volunteer-run adventure race on Achill Island with three route options combining beach and mountain running plus road biking, camping and after-race activities.
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, with chip timing and medals.
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
Experience the beauty of County Mayo with the Westport Sea 2 Summit adventure race featuring road running, cycling, and a hike up the iconic Croagh Patrick.
Monthly updates for Ireland
Get new running races (and updates) in your inbox every month.
May 2027
Multisport weekend at Lough Cutra Castle in County Galway featuring triathlon, duathlon, aquabike, aquathlon, open-water swims and run races across multiple distances.
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 adventure race in Connemara combining running, cycling and kayaking through Croagh Patrick, Killary Fjord and Westport, organised by Gaelforce Events.
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.
A 65 km multi-discipline adventure combining a 1 km kayak on Lough Ennell, two 20.5 km cycle legs, a 10 km run over Croghan Hill with a 770 ft climb and on-course obstacles.
August 2027
A long distance triathlon in County Kerry with a Lakes of Killarney swim, a full Ring of Kerry cycle and a marathon through Killarney National Park.
