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There's plenty of sprawling highways that are so long they suspend belief. Just look at Route 66, an all-American road that's 2,448 miles (3,940 km) long. Route 66 is one of the most famous roads in the world, but it's not the longest. Buckle up and take a ride with this gallery to explore the longest roads on Earth.

▲The I-80 stretches from the East Coast to the West Coast of America.

▲To be exact, the highway runs from downtown San Francisco to Teaneck in New Jersey.

▲It has existed since 1956, and is 2,899.59 miles long (4,666.44 km).

▲The I-90 has existed since 1956, and passes through states such as Illinois and New York.

▲The highway runs from Seattle, Washington, to Boston, Massachusetts.

▲The highway is 3,020.44 miles long (4,860.93 km). Here’s a shot of the I-90 crossing the Columbia River in Washington.

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Route 6 is also called the Grand Army of the Republic Highway.

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The highway doesn’t quite run coast to coast. Instead, it stretches from Bishop, California, to Provincetown, Massachusetts.

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Route 6 is around 3,198.87 miles long (5,148.08 km). It runs through states like Utah, Iowa, and Rhode Island.

▲That’s right, yet another American road. The country dominates the list, and Route 20 is another impressive highway.

▲US 20 is a coast-to-coast road, running from the Pacific Northwest all the way to New England.

▲The road runs along historical paths like the Yellowstone Trail. US 20 is 3,365 miles long (5,415 km).

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China’s longest road is the National Highway 010. The road is 3,500 miles (5,700 km) in length.

▲The road stretches through provinces like Jilin and Jiangsu, which is home to the city of Suzhou.

▲The highway runs from Tongjiang City in eastern Heilongjiang Province to Sanya city in Hainan Province.

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This network of highways connects four of India’s major cities: Delhi, Mumbai, Chennai, and Kolkata.

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The road was completed in 1999, and is 3,633 miles (5,846 km) in length. It cost more than US$8 billion to construct.

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The Golden Quadrilateral effectively forms a ring around India, and is a modern marvel of civil engineering.

▲The Trans-Canada Highway is the second-longest national highway. It runs through every Canadian province.

▲The highway is characterized with a white-on-green maple leaf pattern, which adorns the road.

▲The highway is 4,860 miles (7,821 km) in length. It runs from a major junction in Victoria, British Columbia, to the city of St John’s in Newfoundland and Labrador.

▲Coming in at number three is the Trans-Siberian Highway.

▲It is a network of highways, which stretches from the Baltic Sea across Russia, terminating at the Eastern Sea.

▲The highway stretches over 6,800 miles (11,000 km) in length. It passes through St. Petersburg, Vladivostok, and Kazakhstan.

▲Despite its name, Highway 1 comes second place on this list. The Australian road is over 9,000 miles (14,500 km) long.

▲Highway 1 has a history stretching back to 1955. It was realigned a couple times through the 20th century.

▲These days, more than a million people drive along the highway every day. It runs through every major Australian city.

▲The Pan American Highway is an intercontinental road that stretches from Alaska to Argentina.

▲The network of three roads links nearly all of the Pacific coastal countries in the Americas.

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The Pan American Highway is three times longer than Highway 1 in Australia, and is recognized as the world’s longest motorable road by Guinness World Records.