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.
Alberta Highway 40
Two interesting facts about highway 40 are: The segment from roughly Hinton to Grande Prairie is part of the shortest fully paved land route from the USA to the Klondike Gold fields in the Yukon, and if the segments of the Forestry Trunk Road and Highway 40 were connected, the total length would be approximately and it would be the second longest highway in Alberta.