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.
Mahendra Highway
Mahendra Highway (), also called East-West Highway () runs across the Terai geographical region of Nepal, from Mechinagar in the east to Bhim Datta in the west, cutting across the entire width of the country. It is the longest highway in Nepal and was constructed by CPWD/PWD Nepali and Indian engineers.