Race Roundup
Half Marathons in Ireland 2026: Every Race Worth Entering
If you're searching for half marathons in Ireland in 2026, this is the full picture. Every race worth entering, when they typically happen, and what to know before you book.
The half marathon is Ireland's most popular race distance. Long enough to be a genuine challenge. Short enough to train for in eight to ten weeks. And there's one on almost every weekend from March through to October.
Upcoming half marathons in Ireland
See all half marathon races in Ireland →
The big ones
Great Limerick Run — one of Ireland's best-supported races. The city genuinely turns out for this one. The half is the most popular option on the day, and the atmosphere on O'Connell Street is hard to beat.
Dublin Half Marathon — typically held in Phoenix Park. Flat, well-organised, draws a huge field. Good one to chase a time on — but it sells out fast. Can't get in? See the best alternatives.
Cork City Half Marathon — paired with the full marathon in June. Takes in the city centre with sustained crowd support throughout.
Connemara Half Marathon — one of the most scenic races in Ireland. Narrow roads, Atlantic views, genuinely beautiful. Worth the trip from anywhere in the country.
When do half marathons happen in Ireland?
- Spring (March–May): The busiest window. Cork, Limerick, and Galway all have major half marathons in this period. Enter months in advance.
- Summer (June–August): Quieter for halfs specifically, but good for 10Ks and shorter distances. A few coastal events pop up.
- Autumn (September–November): Second peak. Dublin Half, Waterford, and several county-level events. Good conditions for a PB attempt.
Tips for picking your race
Chasing a time? Phoenix Park (Dublin), Galway Bay, or any flat coastal course on a calm autumn morning. Avoid hilly city-centre routes.
Want atmosphere? Great Limerick Run or Cork City Half. Both have proper crowd support over multiple miles.
Want something quieter? Club-organised halfs in counties like Meath, Leitrim, or Clare — well-run, personal, and usually still open the week before.
Can't get into the big ones? Here are the best alternatives to the Dublin Half.
More races to consider
Related: Running races in Cork · Running races in Galway · Races still open for entry
Browse all upcoming races in Ireland → — updated daily.