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 8 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 .
April 2027
A mixed running and cycling event through Wicklow Mountains National Park and Glendalough Valley, finishing near the Glendalough monastic round tower.
May 2027
A weekend multisport event at Lough Cutra Castle offering triathlon, duathlon, aquabike, aquathlon, swims and runs across youth and adult distances with a festival village.
June 2027
A multi-distance triathlon on the River Barrow in Athy featuring four race formats from Try to TA-100, held as the XIX edition on 5 June 2027.
Two adventure races in Connemara on 12 June 2027: a 68 km run, ride and kayak route including Croagh Patrick summit, and a 34 km run and ride via the mountain shoulder.
July 2027
A half distance triathlon in Waterville with a one-lap bike through Coomaciste, Sneem, Ballaghbeama and Ballaghisheen and a four-lap run along the cliff and promenade.
Monthly updates for Ireland
Get new running races (and updates) in your inbox every month.
A 65 km adventure combining a 1 km kayak on Lough Ennell, 41 km of cycling and a 10 km run over Croghan Hill with obstacles and a 770 ft climb.
A multi-sport weekend on 31 July and 1 August 2027 offering running, cycling and swimming events from 10 km runs to Olympic and half-Iron distances.
August 2027
A staged endurance event in Killarney featuring a lake swim, cycling the Ring of Kerry and a full marathon through Killarney National Park with a 250 participant limit.