Archbishop Michael Neary will lead the annual Croagh Patrick pilgrimage this Sunday.
On Saturday evening, Archbishop Neary will celebrate Mass in St Mary's Church, Westport at 6.30pm to mark the official start of this year's pilgrimage.
On Reek Sunday, Mass will be celebrated on Croagh Patrick every hour from 8am to 2pm.
Confessions will also be available on the summit from 7.30am to 2pm.
Those making the climb this weekend are advised to come prepared - with wet gear, sun screen, appropriate footwear, water and snacks.
Keelin Moran of the Westport Order of Malta says it's very important for people climbing the Reek this weekend, or any time of the year, to be prepared for the challenge.