Northern Ireland
Trail Running Calendar Northern Ireland 2026-2027
Explore the best trail runs in Northern Ireland for 2026-2027! Our updated list features 28 exciting trail runs across the region. Find your next trail run in Northern Ireland below and join the trail community at these great events!
September 2026
A coastal 4.2 mile loop at Loughshore Park where runners complete as many laps as they wish within a six hour time limit, with measured marathon, half and 10K options.
Team relay around the Denis Rankin Round starting and finishing in Donard Park, Newcastle, run over five clockwise legs with GPS tracker handovers.
Trail trail races along the Giant's Causeway coast, from a 10 km charity race to a 64 km ultra, with ITRA points and proceeds supporting Cancer Focus NI.
A 10 km mixed terrain race at Clandeboye Estate near Bangor Co Down with a short trail to Helens Tower, finishers medals, refreshments and prizes.
A two day team mountain marathon in the Mourne Mountains with courses of 35 km to 55 km, a one day six hour score class, camping overnight and timed results.
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.
Cross-country races at Palace Demesne, Armagh on 27 September 2026 with youth and senior categories and set entry fees; on-day entry is not permitted.
October 2026
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.
Marathon and Half Marathon on 4 October 2026 following the way-marked Newcastle Way through Tollymore, Castlewellan and Murlough to Newcastle beach.
Three mountain skyraces in the Mournes on 10 October 2026, from 20 to 50 km with substantial ascent and time cut-offs.
Night endurance and trail races at Montalto Estate with 3, 6 and 12 hour challenges plus 5 km and 10 km races on a 5 km loop.
The tenth and final Bog Run on 11 October 2026 in Castlewellan is a muddy 5 km fundraiser with junior and senior options to support children and young people affected by cancer.
Cross-country races at Billy Neill Playing Fields in Dundonald, part of the Northern Ireland Cross Country League, featuring youth events and male and female team races.
Nav Challenge 4 in the Mourne Mountains is a navigational event in County Dublin on 18 Oct 2026 with an unmarked route, no GPS allowed, and Level B kit required.
5K and 10K races from Mary Peters Track through Minnowburn’s forest trails and riverside, with posted race packs, chip timing and a finisher medal.
November 2026
A Cross Country League meeting at Ormeau Park on 8 November 2026 with races from Under 13 up to senior men and women and age-category prizes.
Trail races and ultras through Tollymore Forest Park and the Mourne Mountains, featuring 10 km charity events, half, marathon, and ultra distances with ITRA points.
Trail and road race at Gosford Forest Park offering 5 km and 10 km courses through woodland and past Gosford Castle as part of the Run Forest Run Series.
National Senior & Even cross-country championships on 22 November 2026; venue and further race details are currently to be confirmed.
December 2026
Mixed tarmac and forest 5K and 10K runs in Tollymore Forest Park with chip timing, a medal and posted race packs.