Col du Lein is a high mountain pass at an elevation of 1.623m (5,325ft) above the sea level, located in the Alps in the canton of Valais in Switzerland.
The ridge road over the pass is tiny, in pretty good quality but it’s not tarmac. It’s mostly asphalted with some gravel sections. It connects Saxon in the valley of the Rhône with Vollèges in the Val de Bagnes.
There are 2 routes to reach the summit. Starting from Sion, the ascent is 12.87 km long. Over this distance, the elevation gain is 1.101 meters. The average percentage is 8.5 %. Starting from Saxon, the ascent is 13.29 km long. Over this distance, the elevation gain is 1.200 meters. The average percentage is 9 %.