The Top 7 Mountain Passes in Donegal
Whether it be for the views, for the climbs or for the downhill descents, browse our list of the best mountain passes in Donegal and make your next adventure one to remember. Contributed by the community, for the community, each mountain pass Highlight is a personal recommendation you know you can trust, so simply find your favorite and go.
Last updated: November 27, 2025
Mount Errigal
Highlight • Summit
The way from the parking lot on the R251 to the Errigal is very boggy. Steep ascent over gravel. However, the effort is rewarded with a magnificent view!
Translated by Google •
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Glengesh Valley
Highlight • Mountain Pass
Glengesh ('Glen of the Swans') is a high mountain pass that passes through the Glengesh and Mumosog mountains linking Ardara and Glencolumbkille.
It is often referred to as the 'Donegal …
It is often referred to as the 'Donegal …
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Mackoght (Wee Errigal)
Highlight • Summit
One of the Seven Sisters, Mackoght is also sometimes known as LIttle Errigal or Wee Errigal. At 555m tall, it makes for a nice extension of a hike up Mount …
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Mamore Gap
Highlight • Mountain Pass
This stretch of stunning road is named the Mamore Gap. It is known as the steepest 1km of road in Ireland.
It has spectacular views of Lough Swilly, the Fanad …
It has spectacular views of Lough Swilly, the Fanad …
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Granny's Pass
Highlight • Mountain Pass
Granny's Pass is off the beaten track when it comes to mountain, yet it is so spectacular. The road runs though the Slievetooey mountain range and if traveling north west, is a glorious way to reach Maghere Beach and Caves.
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Mamore Gap
Highlight • Mountain Pass
Driving or cycling up to the Gap of Mamore takes you up a 30% climb. Running over from Dunree is the ideal way to enjoy the spectacular panoramic views without the steep tarmac ascents.
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View of Glengesh Pass
Highlight • Mountain Pass
Glengesh (which means ‘Glen of the Swans’) is a high mountain pass that cuts through the Glengesh and Mulmosog mountains and links the towns of Ardara and Glencolumbkille.
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