Reek Sunday, also known as Garland Sunday, is an annual pilgrimage to Croagh Patrick in County Mayo, Ireland, held on the last Sunday of July. Pilgrims climb the mountain in honor of Saint Patrick, who is said to have fasted there for 40 days.
The name "Reek" comes from the local name for the mountain, "The Reek".
Pilgrim Numbers: Thousands of people, estimated between 15,000 and 30,000, make the pilgrimage on Reek Sunday.