Slemish Mountain: St. Patrick's Holy Mountain
Slemish Mountain rises dramatically from the Antrim farmland, its distinctive cone shape visible from across the county. This ancient volcanic plug holds a special place in Irish spirituality as the mountain where the young St. Patrick tended sheep during his years of slavery in Ireland.
The Walk to the Summit
The ascent takes approximately 45 minutes to 1 hour from the car park, covering about 1.5km with 200m of elevation gain.
Geological Interest
Slemish is a volcanic plug—the solidified core of an ancient volcano whose softer outer cone has eroded over 60 million years.
St. Patrick's Day Pilgrimage
Each year on St. Patrick's Day (17th March), thousands of pilgrims climb Slemish in commemoration of Patrick's time here.
Things To Do in Slemish Mountain
Summit Climb
45-minute hike to the 437m summit for panoramic views across County Antrim.
St. Patrick's Day Pilgrimage
Join thousands of pilgrims on 17th March for commemorative events.
Photography
Capture the distinctive volcanic silhouette and surrounding farmland.
Contemplate History
Reflect on St. Patrick's transformation during his years of slavery here.
Wildlife Watching
Look for buzzards, ravens, and meadow birds on the slopes.
Sunrise or Sunset
Experience magical light conditions from this elevated vantage point.
Visit Slemish Mountain With Us
Experience Slemish Mountain with a knowledgeable local guide. Private tours tailored to your interests.
Contact Us Directly
Quick Facts
Frequently Asked Questions About Slemish Mountain
Everything you need to know before visiting
Explore Nearby Locations
Discover more incredible destinations in Northern Ireland
Carrickfergus
Home to one of the best-preserved Norman castles in Ireland, this historic harbour town offers 800 years of history just minutes from Belfast
Cushendall
The unofficial capital of the Glens of Antrim - where three glens meet the sea in a village of traditional pubs, warm welcomes, and spectacular scenery
Glenariff Forest Park
The 'Queen of the Glens' - Northern Ireland's most beautiful forest park with spectacular waterfalls, ancient woodland, and panoramic views over the Antrim coast.