 The long beach is accessed from the R750 regional road which runs parallel to the beach, separated from it by extensive areas of sand dunes.It is by road south of Wicklow and about south of the city centre of Dublin.Brittas Bay is in the civil parish of Dunganstown in the barony of Arklow on the southern coast of County Wicklow.There was a Christian settlement in nearby Three-Mile-Water prior to St Patrick's arrival in Ireland.