Walking Pilgrimage, Great Meadows to Doylestown

Ran into this on two different group rides this weekend. Several thousand people in 3 groups are walking 60 miles over 4 days. Most are speaking Polish. 

"The pilgrims journey 60 miles across the course of 4 days and 3 nights. They start out from Great Meadows, NJ, and make their way down to Doylestown, PA, where the Shrine is located. During the 3 nights, the pilgrims camp out in state parks and on farmland."