The Pilgrim's Route, (Pilegrimsleden) also known as St. Olav's Way or the Old Kings' Road, was a pilgrimage route to the Nidaros Cathedral in Trondheim, Norway, the site of the tomb of St. Olav. The main route is approximately 640 kilometres (400 mi) long. It starts in the ancient part of Oslo and heads north along the lake Mjøsa, up the Gudbrandsdal valley, over the Dovrefjell mountains, and down the Oppdal and Gauldalen valleys to end at the Nidaros Cathedral in Trondheim.
Although the Pilgrim's Route over the Dovrefjell mountains is only one of several Old Kings' Roads in Norway, it is arguably the most famous. It connected the historically important cities of Oslo and Nidaros (now Trondheim) in Norway.
The oldest known route over the Dovrefjell mountains went up to the east of the later "King's Way", leaving the valley of the Lågen at the Tofte Kongsgården (King’s Farm) just past the Dovre Church in the municipality of Dovre (slightly south of present-day Dombås). It followed a lower and more easterly route which followed the drainage to the east of Tofte, and then proceeded over Dovrefjell to join the route in Oppdal municipality.
The "King's Way" traveled up through the Gudbrandsdal valley and left the valley of the Lågen at Tofte Kongsgården (King’s Farm) shortly past the Dovre Church in the municipality of Dovre (just south of present-day Dombås). This route went more directly over the Dovrefjell mountains into the municipality of Oppdal.