Maghera Beach, Ardara. Maghera beach is located approx 6 miles from Ardara Situated in South-West Donegal, Republic of Ireland, one of the most scenic areas in Ireland, a county with miles of unpolluted coastlines and beaches, lies Maghera beach. Prestine white sandy beach, with clean atlantic water, natural sea-erosion caves lie beneath majestic mountains that hide an ancient castle. Maghera is located approx. 6 miles from Ardara (nearest town), and approx. 25 miles from Donegal Town.http://www.magherabeach.com/