Trail Running Calendar Northern Ireland 2026-2027
We have found 26 Trailruns in Northern Ireland. Check below where and when you can find the races.
0 – 100∞ km
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NORN IRON 100 is a multi terrain ultra run in Northern Ireland on 30th May - 31st May 2026, listed as UTMB Index **100M / M** with an iTRA grade of 5 and organised by We Run Wild NI.
A mountain race from Newcastle Centre to Donard Park covering 10 km with 850 m of climb. The unmarked route requires navigation and mandatory safety kit; checkpoint order and cut-offs are enforced for competitor safety.
June 2026
A measured 5 mile chip-timed race from CS Lewis Square that follows the Connswater Greenway into Victoria Park and back, on mixed road, trail and grass surfaces.
A 10 mile fell race with about 2200 ft of climbing around Cairncastle and Ballygally near Larne. The course uses roads, farm tracks and fells with checkpoints and minimal route marking, and required fell running kit is specified.
An 8 km mountain race with about 800 m of climb, run anti-clockwise from Ott Car Park. The unmarked route requires competitors to carry full body cover and wear race numbers on the chest.
A 5 km mountain race with about 500 m of climb starting at Hen Car Park. The unmarked route is part of the Hills and Dales series, organised by Newcastle AC, with a 15 year minimum age and specific kit and number rules.
An elimination event at Florence Court where runners repeat a roughly 4.2 miles lap each hour, completing a lap within one hour to continue. The race proceeds hourly until a single runner completes a lap and is declared the last one standin..
An obstacle race in Derry / Londonderry on 20 and 21 June 2026 featuring a 10 km course with over 50 natural and man made obstacles, plus separate 5 km teen and 2 km mini courses for younger participants.
Drinnahilly is a 6 km forest race with 400 m of climb at Donard Forest Park on 25 June 2026, part of the Hill and Dale series. Entries are via SiEntries and runners must be 15 or older.
A 5 km multi-terrain event in Carnlough featuring quarry trails, climbs, a short out-and-back on Largy Road and coastal views; open to runners aged 16 and over with set entry fees and no refunds.
July 2026
A 12 km mountain race in County Tyrone with 500 m of ascent to the Mullaghcarn summit. The fully marked course requires Level B kit and is organised by Carmen Runners as part of the IMRA Ulster Championships and NIMRA League.
A half marathon and 10k around the grounds and nearby forest of Hillsborough Castle, supporting Action Mental Health. The event includes distance markers, chip timing, race photos and a themed medal.
August 2026
Seven Sevens is a mountain running event in County Down on 8 August 2026 covering 31 km with about 2800 m of ascent. Organised by BARF, the route has only major junction markings and GPS use is not allowed.
A backyard ultra at Florence Court on 8 August 2026 where competitors run a 4.17 mile loop each hour, eliminating anyone who does not finish in time until a single runner remains and is crowned Irish Champion.
Scrabo in County Down is a NIMRA short-championship mountain race organised by Ballydrain Harriers on 20 August 2026. The course is 6.30 km with 360 m climb; only major junctions are marked and GPS is not allowed.
A 28.24 km mountain race in County Down on 29 August 2026 with 1328 m of ascent around Tollymore Forest Park. The technical route follows tracks, the Mourne Wall and several summits; Level C mandatory kit is required.