Thousands of people are expected to descend on Walsingham this weekend for the traditional summer Tamil pilgrimage.
Drivers have been warned that roads around the area will be busier than usual during the celebration on Sunday.
The event is the second pilgrimage to the site to take place this year.
A Pilgrim Mass is scheduled to take place at the Church of the Annuniciation in the village at noon on Sunday.
Police say they have worked closely with the event’s organisers to ensure the safety both of people attending and the wider community.
And officers will be present to help both pilgrims and local residents alike during the day.
A Norfolk Police spokesman said: “Routes to the pilgrimage will be clearly marked for all those attending and officers are warning motorists that routes into Walsingham along the A1065 into Fakenham, A149 at Fakenham and the B1105 towards Wells-next-the-Sea, are likely to be congested.”
Live traffic updates will be provided via the @northnorfpolice Twitter account during the day.
Traditionally, the July pilgrimage, which has drawn as many as 15,000 people in recent years, attracts more people than the earlier event, which takes place in the spring.