Trail Running Calendar Northern Ireland 2026-2027

Sea2Sky in Donard Park, Newcastle features evening 10K race and walk plus a 5K race that moves from promenade to forest and the Mourne foothills, with mixed road, trail and an open-mountain section and post-race refreshments.

A NIMRA medium-distance fell race at Gortin Glens covering 12 km with 500 m ascent to Mullaghcarn (542 m). Trail shoes are advised, entries are limited to 200 and the minimum age is 17.

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.

A 19 mile mountain race in the Mourne Mountains with about 2,600 m ascent and an anticlockwise 2026 route over seven summits. Navigation skills and mandatory safety kit are required and entries are limited to 150.

A backyard ultra at Florence Court where runners complete repeated 4.17 mile laps with one hour to finish each lap. Laps repeat until only one runner remains; all finishers receive a medal and an event t shirt.

A 3.8 mile off road race to the summit of Lurig (1,073 ft) and back, held as part of the Heart of the Glens Festival. Trail shoes are advised; minimum age 16 and the published entry fee was £25.

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 mountain fell race in the Western Mournes based at Sandy Brae on 29 August 2026. The route covers 11 km with 768 m of ascent, includes named control points and marked sections, and requires compulsory mountain safety kit.

A mixed terrain 10 km race through Clandeboye Estate near Bangor Co Down on 13 September 2026, organised by Coastal Runners NI. Entries run 5 June to 10 September and include a finishers medal, prizes and post-race refreshments.

Test your endurance and navigation in a two day self-sufficient mountain marathon for teams of two. Choose from multiple distance classes or a one day score event in the scenic Mourne Mountains.

Cuilcagh in County Cavan is an 11.90 km mountain race on 26 September 2026 with 870 m of climb, a 250 person limit and mandatory Level B kit; only major junctions are marked and GPS devices are not permitted.

A mountain running event in County Down on 3 October 2026 covering 11.90 km with 870 m climb, organised by Mourne Runners as part of the IMRA Ulster Championships and NIMRA League; GPS is not allowed and Level C kit is required.

SkyRun the Mournes features three demanding skyrunning races in the scenic Mourne mountains. Runners can choose from distances of 50 km, 35 km, or 20 km, each with significant elevation gain. The event is scheduled for October 10th, 2026.

Nav Challenge 4 in the Mourne Mountains takes place in County Dublin on Sunday 18 October 2026. The unmarked course is 99.00 km with 999 m of climb, GPS is not allowed and a Level B mandatory kit is required.

A cross country event at Ormeau Park on 8 November 2026, part of the Cross Country League, with youth and senior races from 1 to 4 miles and team and individual prizes.

A 20 mile coastal trail run from Portrush along the Causeway Coast Way featuring cliffs, beaches and the Giant's Causeway UNESCO site. The event counts toward the Endurancelife Season Leaderboard.

Norn Iron 100 is a long-distance ultra event listed on the UTMB Index with an iTRA 5 rating. It will hold its sixth edition on 29 and 30 May 2027 in Northern Ireland.

A summer running festival at Hillsborough Castle and Gardens on 25 July 2027 offering 10K and Half Marathon routes, chip timing, kilometre markers, a themed medal and free race photos in support of Northern Ireland Hospice.