This iconic event features breathtaking routes, steep ascents, and rugged terrain, making it Ireland’s toughest mountain running event.

Events and distances:

55km Skyline: 4,000m+ ascent | €150

30km Sky Challenge: 2,100m+ ascent | €140

16km Altan Castle: 800m+ ascent | €90

Starting in the charming Gaeltacht village of Dunlewey, nestled at the foot of Mount Errigal, participants will journey through a landscape as rugged as it is beautiful.

Readers are advised to check with the organiser before relying on the details published here.