SLIEVE LEAGUE 2025 MAY 23 / 24th - Run or hike, your choice

COME JOIN US FOR IRELAND’S MOST DIVERSE TRAIL

5k Uphill / 13k - 1 Loop / 25k - 2 Loops / 50k Ultra - 4 Loops.

Our Wild Atlantic Challenge Sliabh Liag hiking and trail running weekend has something for all abilities. Whether you're attending for the leisurely cliff hikes or looking to tackle your first trail ultra-marathon, these Donegal cliffs won't disappoint. 

Our Race HQ is at the Sliabh Liag Visitors Centre, in the picturesque village of Teelin, Co. Donegal.

Come for the races, stay for the craic.

If you’ve never been make 2025 the year, register at: Sliabh Liag 2025