Ultra Marathons in Ireland
An ultramarathon or 'Ultra' is the term for any running event longer than the traditional marathon length of 42.195 kilometres (26.2 miles). Some of the most common distances are 50K, 100K and 100 miles. Ultra marathons are becoming increasingly popular, especially the off-road/trail and mountain running variants as well as the ultimate endurance event - the Last One Standing (LOS) or Backyard Ultra (BYU).
The following is a list of ultra marathons in Ireland.
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Events 1 to 29 of 29
Tollymore Extreme
Saturday, 8 November 2025Tollymore Forest Park, Newcastle, Co. Down, NI
Bauers Megabackyard Funrun
Saturday, 3 January 2026Waterville, Derrynane, Co. Kerry
Art O’Neill Challenge
Friday, 16 January 2026Dublin Castle to Glenmalure, Ireland
Donadea 50K
Saturday, 14 February 2026Donadea, Co. Kildare
Trail Criú 6 Hour Challenge
Sunday, 15 February 2026Kippure Estate, Co. Wicklow
Castle to Castle Run
Saturday, 14 March 2026Carrickfergus, Co. Antrim, NI
Tralee 50K Ultra Marathon
Saturday, 21 March 2026Tralee, Co. Kerry
Florida Endurance Challenge
Saturday, 4 April 2026Florida Manor Estate, Killinchy, Co. Down, NI
Belfast to Londonderry 75 Mile Race
Saturday, 11 April 2026Belfast to Derry, Antrim, NI
Connemarathon
Sunday, 19 April 2026Connemara, Co. Galway
ALTAR 50K & 100K
Saturday, 25 April 2026Avondale, Co. Wicklow
Waterville Trail Running Festival
Saturday, 2 May 2026 to Sunday, 3 May 2026Waterville, Derrynane, Co. Kerry
Dublin Mountain Backyard Ultra
Saturday, 9 May 2026Ballinascorney, Dublin Mountains, Co. Dublin
Tralee 40 Mile Challenge
Saturday, 16 May 2026Tralee, Co. Kerry
Wild Atlantic Ultra
Saturday, 23 May 2026Louisburgh, Co. Mayo
Norn Iron 100
Saturday, 30 May 2026 to Sunday, 31 May 2026Ballintoy to Gortin, NINorn Iron 100 Mini
Sunday, 31 May 2026Dungiven to Gortin, NI
Portumna Forest Marathon
Saturday, 6 June 2026Portumna Forest Park, Portumna, Co. Galway
Argory Dusk to Dawn Challenge
Saturday, 20 June 2026 (Date TBC)The Argory, Dungannon, Co. TyroneTralee 100K Ultra Marathon
Saturday, 20 June 2026Tralee, Co. Kerry
Gullion Way Ultra Marathon
Saturday, 4 July 2026Newry, Northern Ireland
Grey Abbey Endurance Challenge
Saturday, 18 July 2026 (Date TBC)Greyabbey, Newtownard, Co. Down, NI
Famine Way Ultra
Saturday, 1 August 2026 to Sunday, 2 August 2026 (Date TBC)Dublin to Strokestown, Co. Roscommon
Abbott Longford Marathon
Sunday, 30 August 2026 (Date TBC)Main Street, Longford, Co. Longford
Kerry Way Ultra
Friday, 4 September 2026 to Saturday, 5 September 2026Killarney, Co. Kerry
Mourne Mountain Marathon
Saturday, 19 September 2026 to Sunday, 20 September 2026Mourne Mountains, Newry, Co. Down, NI
EcoTrail Wicklow
Saturday, 26 September 2026Bray, Co. Wicklow
Montalto Night Endurance Challenge
Saturday, 10 October 2026 (Date TBC)Ballynahinch, Co. Down, NI
SkyRun The Mournes
Saturday, 10 October 2026Donard Park, Newcastle, Co. Down, NI
Events 1 to 29 of 29