Slemish Mountain is open year-round, and on Saint Patrick's Day (17 March) large crowds walk to the top of the mountain as a pilgrimage. The one and a half kilometre round walk to the summit and back takes approximately one hour in good weather. Excellent views can be had of the Antrim and Scottish coasts to the east. Ballymena town, Lough Neagh and the Sperrin Mountains are all normally visible to the west whilst the Bann Valley and the higher summits of the Antrim Hills can be seen to the North. The 180 metre climb is steep and rocky.