If you think about it, of course, the longest road in the United States is going to be coast to coast. But with so many ...

If you think about it, of course, the longest road in the United States is going to be coast to coast. But with so many coastal states, there are plenty of places where it could start and end.

World’s longest highway: The Pan-American Highway is a ... The highway has many options in the United States, Canada, and Mexico because of the large area and number of roads.