The Col du Jandri is a high mountain pass at an elevation of 3.165m (10,383ft) above the sea level, located in Rhone-Alpes in the French Isère département. It follows the R1-2 trail. It's one of the highest mountain roads of Europe. This runway forms the highest trafficable road in the Alps and includes very steep ramps.
The road is not paved but
passable by all-terrain vehicle. The track still stands winding, often stony,
dusty and steep. The road is signposted as mountain bike cross-country course
and is even used by motorized heavy vehicles. The way has some very steep
ramps. You have to challenge some very steep grades which require both physical
strength and a very low gear.
To get the summit, starting
from Les Clapiers (Le Bourg-dOisans), the ascent is 26.9 km long. Over this
distance, the elevation gain is 2.458 meters and the average percentage is 9.1
%. The road is asphalted up to 1.730 m altitude, just above the highest houses
on the side. Then the gravel road is good enough for cycling with a road bike
on, but it is still quite steep and very dusty. It's one
of the highest mountain roads of the country.
This road is usually open
throughout the summer. A panoramic restaurant is situated there at an elevation
of 3,200 meters and provides amazing views to the Glacier Mont de Lans. Do not
travel this pass in severe weather conditions. Avalanches, heavy snowfalls and
landslides can occur anytime, being extremely dangerous due to frequent patches
of ice. It has a well-deserved reputation for being dangerous because of
unpredictable snowstorms and blizzards, and driving under these conditions, can
be extremely challenging. Before this pass, the road climbs up the Col des
Gourses, at an elevation of 2.550m (8,366 ft) above the sea level.