Les Portes du Soleil is a major skisports destination in the Alps, encompassing twelve resorts between Mont Blanc in France and Lake Geneva in Switzerland. With more than 650 km of marked pistes and about 200 lifts in total, spread over 14 valleys and about 1,036 square kilometres, Portes du Soleil ranks among the two largest ski areas in …Les Portes du Soleil is a major skisports destination in the Alps, encompassing twelve resorts between Mont Blanc in France and Lake Geneva in Switzerland. With more than 650 km of marked pistes and about 200 lifts in total, spread over 14 valleys and about 1,036 square kilometres, Portes du Soleil ranks among the two largest ski areas in the world. Almost all of the pistes are connected by lifts – a few marginal towns can be reached only by the free bus services in the area. The highest elevation accessible on skis is 2260 m and the lowest is 930 m. As with many other Alpine ski resorts, the lower slopes of the Portes du Soleil have snow-making facilities to extend the ski season by keeping the lower slopes open during the warmer months.