Running races in Northern Ireland in Sep 2027

13 races in date order

Dromara Drumlins 510K Challenge
September 2027 · Dromara, Northern Ireland · 10K · 5K
Rolling drumlin hills of County Down

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Ards 5 Mile Challenge
September 2027 · Newtownards, Northern Ireland · 5 Mile

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GRC Coastal 5k
September 2027 · Glenarm, Northern Ireland · 5K
A coastal 5K on Antrim's Glenarm shoreline

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Laganside 10K
September 2027 · Belfast, Northern Ireland · 10K · 1 Mile
Follows the River Lagan through the heart of Belfast

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Waterside Half Marathon
September 2027 · Londonderry, Northern Ireland · Half Marathon

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St Patricks Academy 5k
September 2027 · Dungannon, Northern Ireland · 5K

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Giant's Causeway Coast Marathon
Sat 11 Sep 2027 · Portballintrae, Northern Ireland · Ultra Marathon · Marathon · Half Marathon · 10K
Along the World Heritage coastline by the Giant's Causeway

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Break 4 the Border Half Marathon
September 2027 · Newry, Northern Ireland · Half Marathon
Crosses the border from County Down into County Louth

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Rock The Lough
September 2027 · Lurgan, Northern Ireland · Half marathon · 10K - run/walk · 5K - run/walk · 1K - fun run
Loops both Craigavon lakes via the Oxford Island trails

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Clandeboye 10k
September 2027 · Bangor, Northern Ireland · 10K
Through the historic Clandeboye Estate near Bangor

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Mourne Mountain Marathon
September 2027 · Newry, Northern Ireland · 55K · 45K · 35K
A two day navigational challenge through the Mourne Mountains

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Belfast Half Marathon
Sun 19 Sep 2027 · Belfast, Northern Ireland · Half Marathon
Weave through historic streets in the heart of Belfast

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Seaton Classic 10K Road Race
September 2027 · Bangor, Northern Ireland · 10K
Castle Park to Groomsport along Bangor's coast

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← Northern Ireland Oct Nov Dec Jan 2027 Feb 2027 Mar 2027 Apr 2027 May 2027 Jun 2027 Jul 2027 Aug 2027 Oct 2027

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Every race here is published by its organiser; RunCalendar checks the date and the entry window against the organiser's own page and rebuilds this calendar every night. A confirmed date shows its day; a provisional one shows only its month. Last updated 22 October 2026.