2. Ruta 40 (Route 40)
Location: Argentina
Stretching parallel to the Andes Mountains, Route 40 is 3,100 miles long, rivaling US Route 66, Trans-Canada Highway, and Stuart Highway in Australia for the title of the longest road in the world. As such, it isn’t a road that can be experienced in a short trip. Regardless, the mere diversity of the regions it passes true is enough to guarantee enjoyment to any driving enthusiast.