Ireland's Epic Mountain Running Event.
Sat Sept 20th 2025 - Derryveagh Mountains, Donegal
Prepare for an epic mountain running experience in Donegal’s stunning Derryveagh Mountains, also known as the “Seven Sisters.” 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 | €85
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.