Croagh Patrick (Irish: Cruach Phádraig, meaning "(Saint) Patrick's Stack"), nicknamed the Reek, is a 764 metres (2,507 ft) mountain and an important site of pilgrimage in County Mayo in Ireland. It is 8 kilometres (5 mi) from Westport, above the villages of Murrisk and Lecanvey. It is the third highest mountain in County Mayo after Mweelrea and Nephin. It is climbed by pilgrims on Reek Sunday every year, which is the last Sunday in July. It forms the southern part of a U-shaped valley created by a glacier flowing into Clew Bay in the last Ice Age.