Trail ultramarathons in Ireland
Find trail ultramarathons in Ireland. Compare 2 upcoming events by date and location. Open a race guide for the course, recorded editions and official entry information where available.
Events to explore include Donadea 50K and Bluestack Way Ultra.
Narrow your search to County Kildare, Donegal and Kerry.
3 listed events · 2 with upcoming dates
Upcoming ultramarathons
2 matching events, earliest date first. Entry availability is shown separately.
Donadea 50K
IRLDonadea, County Kildare
Donadea 50K — 50K at Donadea Forest Park.
· 50K
Race details, entry and past editions →Entry information ↗Bluestack Way Ultra
IRLDonegal / Letterbarrow, Donegal
Bluestack Way Ultra — 25K, 50K.
· 50K
Race details, entry and past editions →Entry information ↗Race archive
Past races and previous editions
Looking back at a race? Browse the guides below for recorded editions. This section also includes events awaiting a new date and cancelled editions. Previous editions of races in the upcoming calendar are available through their race guides above.
Waterville Trail Running Festival
IRLWaterville, Kerry
Waterville Trail Running Festival — a verified UTMB Index race for the 2026 edition.
Next date not listed
Race guide and recorded editions →Browse states, counties and areas
Choosing a race in Ireland
The unfiltered upcoming calendar includes events in Donadea (1), Donegal / Letterbarrow (1). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about ultramarathons in Ireland
Which trail ultramarathons are coming up in Ireland?
Donadea 50K is listed for 13 February 2027. Bluestack Way Ultra is listed for 31 July 2027. Check the race guide and organiser’s latest information before making plans.
Where can I find race entry details for Ireland?
Follow the link from the race guide to the organiser or entry provider, where one is available. Check the entry deadline, eligibility and current availability there. A listed race date does not necessarily mean entries are still open.
Why has a race moved out of the upcoming calendar?
Once its listed dates have passed, a race moves to the past-editions view unless another upcoming edition is recorded. Cancelled events also leave the upcoming list. The race guide stays available, and the event returns when a new date is added.