Seven Sisters Skyline 55km

The Seven Sisters Skyline on 21 September 2024 is an epic 55km or 30km mountain running event in the Derryveagh mountains in Donegal.

This event has become Ireland’s Premier mountain running event, and is part of the UK-Ireland National Skyrunning series. It is also Ireland’s largest mountain running event.

The route runs along the top of all of the Seven Sisters in the Derryveagh mountains from Errigal to Muckish. The course is renowned for its variability in terrain and amazing beauty. The 55km with 4,000m ascent event is regarded as the toughest in Ireland.