Slemish Mountain
An outdoor landmark in County Antrim
Slemish Mountain is a volcanic plug rising 437 metres in County Antrim, Northern Ireland, known for its historical connection to Saint Patrick. It offers a moderate climb with rewarding panoramic views of the Antrim Plateau and beyond.
Families should note the terrain can be steep and uneven, making it best for children aged 5 and up with good walking confidence. There are no facilities on the mountain, but a small car park and information board are at the base. Allow 1-2 hours for the ascent and descent.
Highlights: 360-degree views, geology, Saint Patrick's history
Ages: 5+ (younger in carriers)
Facilities: Car park only; bring snacks, water, and weather-appropriate clothing
At a glance
Entry
Free / cheap
What parents should know
Slemish Mountain is a volcanic plug rising 437 metres in County Antrim, Northern Ireland, known for its historical connection to Saint Patrick.
Safety
Steep terrain requires confident walkers
The mountain has steep, uneven paths. Children should be confident walkers aged 5+ or carried in a backpack carrier for younger siblings.
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Today
Light drizzle
19°C
Light showers expected — plan for indoor spells
Opening hours
Opening hours could not be confirmed.
Last checked 24 May 2026, 22:42.
{'timezone': 'Europe/London', 'notes': 'Open year-round; no restricted hours. Free access to mountain trail and car park with facilities (toilets, picnic tables).', 'reason': 'Multiple official tourism sources confirm year-round access with no ticketed or timed entry restrictions'}
Worth combining
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