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 across the border between southeast Panama and northwest Colombia, 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, the only way to safely navigate this stretch is by sea.