Pan-American Highway
The Pan-American Highway is a network of roads stretching across the American continents and measuring about in total length. Except for a rainforest break of approximately , called the Darién Gap, the roads link almost all of the Pacific coastal countries of the Americas in a connected highway system. According to "Guinness World Records", the Pan-American Highway is the world's longest "motorable road". However, because of the Darién Gap, it is not possible to cross between South America and Central America with conventional highway vehicles. Without an all-terrain vehicle, it is necessary to circumnavigate this terrestrial stretch by sea.
Hillclimbing in the United States
The hill climb with the longest road, that has been continuously run, in the world is the Mount Equinox Hill Climb located in Arlington, Vermont just outside Manchester. The length of the road is 5.2 miles and the elevation change is 3,100 feet. It contains more than 40 turns and cars have been clocked at breaking 100 MPH on the long straight ending at "The Saddle". The hill climb has been run by such famous drivers as Carroll Shelby, Briggs Cunningham, René Dreyfus, John Fitch and Miles Collier to name just a few. Started in 1950 as an official SCCA event, it continues uninterrupted, as a vintage car race. Since 1973 the sanctioning body has been the Vintage Sports Car Club of America.