The Best Running Races in Ireland in 2026

If you're looking for the best running races in Ireland in 2026, you're in the right place. Events are back to full capacity, new races are appearing on the calendar, and the standard of organisation across Irish road racing has never been better.

Here's what's worth entering this year — from the big city marathons to the hidden gem 5Ks that don't get enough attention.

Marathons worth entering in 2026

Cork City Marathon — consistently one of the best-organised marathons in Ireland. The June date makes it an ideal spring target, and the city centre course draws serious crowd support. Fills up fast — enter early or check out our Cork City Marathon guide.

Dublin City Marathon — the big one. Run in late October, it's Ireland's largest running event and a bucket-list race for many. Entry is by ballot, so register your interest early.

Galway City Marathon — a scenic, well-supported race with a loyal following. The May date and flat course make it popular for those chasing a PB.

Half marathons worth entering in 2026

Great Limerick Run — one of Ireland's best-supported races. The city genuinely turns out for this one. The half marathon is the most popular option, and the atmosphere is hard to beat.

Dublin Half Marathon — typically held in Phoenix Park. Flat, well-organised, and always sells out. Can't get in? Here are the best alternatives.

Cork City Half Marathon — paired with the full marathon in June. The course takes in the city centre with strong crowd support throughout.

Browse all half marathons in Ireland.

10Ks and 5Ks

The Irish 10K scene is thriving. Almost every county has at least one quality 10K, and many club races in this category are among the best-value race experiences going.

Community 5Ks are the heartbeat of Irish road running — entry points for new runners, reunion events for seasoned ones, and usually the most fun of the lot.

Upcoming races across Ireland

When to enter

• January–February — enter spring marathons and half marathons now. They sell out months in advance.
• March–April — summer 10Ks and club races open up. Good time to find something local.
• May–June — peak race season. Most events have sold out. Look for late entries and smaller races.
• September–October — autumn races open for entry. Dublin Marathon ballot typically closes by April.

Find races near you

Browse by county: Dublin · Cork · Galway · Mayo

Browse by distance: 5K · 10K · Half Marathon · Marathon

Or see all upcoming races in Ireland, updated daily.