The Pilgrim Paths, or St. Olav Ways to Trondheim, is a network of routes used by the pilgrims on their pilgrimage to Nidaros Cathedral, the burial site of Olaf the Holy. In medieval times, Gudbrandsdalsleden was the main route to Nidaros. Gudbrandsdalsleden is a 643 km way-marked route, meandering through a beautiful, diverse scenery from Oslo to Trondheim. A pilgrimage does something to you as a human being. To walk from Oslo to Trondheim through local communities, villages and nature, is an experience of a lifetime.