America has some of the loneliest roads in the world, including U.S. Route 50, a straight line running coast to coast , and the scenic Dalton Highway Express bus route that takes you to the Arctic . Interestingly, the world's longest road, the Pan-American Highway , isn't linked to similar feelings of isolation but pure adventure.

Starting in the U.S. and ending in Argentina, the Pan-American Highway runs 19,000 miles long. It passes through diverse landscapes. But perhaps its most underrated purpose is its flexible access to some of the most stunning national parks in the Americas. But unlike U.S. Route 50, the Pan-American Highway isn't a continuous route. It has a "death zone" between the Colombia-Panama border, the wild Darién Gap. Read on to learn how this really long yet rew

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