Col du Jandri is a high mountain peak at an elevation of 3.165m (10,383ft) above the sea level, located in the Isère department of the Auvergne-Rhône-Alpes region, in southeast-central France. It's one of the highest roads of Europe. This runway forms the highest trafficable road in the Alps and includes very steep ramps.
Set high in the Ecrins massif of the French Alps, the road to the summit is called R1-2 trail. It’s unpaved 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'll have to challenge some very steep grades which require both physical strength and a very low gear. It is a service road for the various ski lifts and cable cars of Les Deux Alpes ski station.
Starting at Les Clapiers (Le Bourg-d'Oisans), the ascent is 26.9km (16,71 miles) long. Over this distance, the elevation gain is 2.458 meters and the average gradient is 9.1 %. The maximum slope is 16%. The final part is very steep and stony. This road is usually open throughout the summer. A panoramic restaurant is situated at the summit, providing amazing views to the Glacier Mont de Lans. This ride also crosses Col des Gourses, at an elevation of 2.565m (8,415ft) above the sea level. The road is asphalted 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 roads of the country.