What is the longest drive in USA?

At over 3300 miles (5400km) U.S. Route 20 is the longest road trip road in the United States. U.S. Route 20 covers 3,365 miles, from Boston, Massachusetts to Newport, Oregon. In 1926, it officially became a U.S. Highway, and during its early years, terminated at Yellow Stone National Park.



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At 17,789 miles (28,629 km), it stretches from Khasan, Russia, to Simon's Town, South Africa, and takes 392 hours (~16 days) to drive. Direct route passes through 18 countries, on an entirely connected road system (no ferries).

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The A1 also known as the Great North Road is the longest numbered road in the United Kingdom, at 410 miles (660 km). It connects London, the capital of England, with Edinburgh, the capital of Scotland.

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