From atop Aiguille du Midi cable car (téléphérique) station, Chamonix, France. Photo by Tome Dempsey
We rate this trip as moderately strenuous. You should be an experienced hiker in good physical condition. You should be capable of walking 5-7 hours per day on good trails with some steep ascents and descents, averaging 1500 to 2500 vertical feet per day at an elevation up to 8500 feet above sea level.