The Pilgrimage from Paris to Chartres is an annual Pentecost pilgrimage in France that draws thousands of devotees on a three-day walking journey toward the historic Cathedral of Notre-Dame de Chartres. The pilgrims travel together on foot, pray, sing, attend services, and endure the physical challenges of the route which covers more than 100 km. As part of a deeply spiritual experience. The event is rooted in Catholic tradition and is marked by communal worship, the celebration of Mass in the older liturgical form.

Link to the article:

https://www.faz.net/aktuell/gesellschaft/pilger-bei-der-pfingstwallfahrt-nach-chartres-in-frankreich-110534542.html