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Pan-American Highway, network of highways connecting North America and South America. Originally conceived in 1923 as a single route, the road grew to include a great number of designated highways in participating countries.

The Inter-American Highway, from Nuevo Laredo, Mexico, to Panama City (3,350 miles [5,390 km]), is a part of it.

The Mexican section was built and financed entirely by Mexico, while the sections through the smaller Central American countries were built with U.S. assistance.

The whole system, extending from Alaska and Canada to Chile, Argentina, and Brazil, totals nearly 30,000 miles (48,000 km).

In the early 21st century a portion about 50 miles (80 km) long, called the Darien Gap highway (located in Panama and Colombia), remained uncompleted.

In the early 21st century a portion about 50 miles (80 km) long, called the Darien Gap highway (located in Panama and Colombia), remained uncompleted.

Is the Pan American Highway finished?

According to Guinness World Records, the Pan-American Highway is the world’s longest “motorable road”. However it is not readily possible to drive all the way since the route is interrupted by the 160 kilometre-wide (100 mile) Darién Gap between Central and South America.

network of roads stretching across the American continents and measuring about 30,000 kilometres (19,000 mi) in total length

The Pan American Highway: The Longest Road In The World

Except for a rainforest break of approximately 160 km (100 mi), called the Darién Gap

According to Guinness World Records, the Pan-American Highway is the world’s longest “motorable road”.

However it is not readily possible to drive all the way since the route is interrupted by the 160 kilometre-wide (100 mile) Darién Gap between Central and South America.

roads link almost all of the Pacific coastal countries of the Americas in a connected highway system.

The Highway consists of both official and unofficial elements. The official section, which is referred to in Spanish variously as the Autopista / Carretera / Ruta Panamericana, runs from Nuevo Laredo, Mexico on the U.S. Border to Buenos Aires, the capital of Argentina.

The Pan-American Highway is a series of routes that passes through Mexico, Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica and Panama in North America, and Colombia, Ecuador, Peru, Chile and Argentina in South America.

It is listed in the Guinness Book of World Records as the longest motorable road in the world. While it doesn't officially have a route through the U.S. and Canada, some people start in Alaska and drive/bike to Ushuaia, Argentina, the southernmost tip of South America. It is necessary to bypass the Darién Gap between Panama and Colombia by ferry, however.

The Pan-American Highway is the world's longest "motorable road". However, because of the Darién Gap

The Pan-American Highway passes through many diverse climates and ecological types, from dense jungles, to arid deserts, some of which are passable only during the dry season, and in many regions driving is occasionally hazardous.

The route shown on the map runs through 14 countries:

1.The United States
2.Canada
3.Mexico
4.Guatemala
5.El Salvador
6.Honduras
7.Nicaragua
8.Costa Rica
9.Panama
10.Colombia
11.Ecuador
12.Peru
13.Chile
14.Argentina

The Pan-American Highway passes through many diverse climates and ecological types, from dense jungles, to arid deserts, to barren tundra, some of which are passable only during the dry season,

It also has links to a number of other countries. In the process it passes through all the major climate zones and many varied landscapes including arctic tundra, boreal forest, mountains, prairies, arid deserts and tropical jungles.

Moving from north to south, the route starts at Deadhorse, Alaska near the Prudhoe Bay oilfields and for the first 662 kilometres (414 miles) follows the Dalton Highway to Fairbanks.

The Pan-American Highway system is physically mostly complete and extends in de facto terms from Prudhoe Bay, Alaska, in North America to the lower reaches of South America.