21 of the longest highways in the US

Although it was officially decommissioned in 1985, US Route 66 still symbolizes the spirit of Americaand the allure of the American road trip.Thankfully, between the Interstate Highway System and the United States Numbered Highway System, there's no shortage of meandering routes to choose from when planning your next adventure.From Interstate 25, which traverses the Rocky Mountains as it connects New Mexico and Wyoming, to US Route 20, which spans from Boston, Massachusetts, to Newport, Oregon, here are 21 of America's longest highways.I-25: 1,061.67 milesTraversing the Front Range of the Rocky Mountains, Interstate 25 goes from Las Cruces, New Mexico, to Buffalo, Wyoming.I-5: 1,381.29 milesStarting in San Ysidro, a district of San Diego, California, north of the US-Mexico border, Interstate 5 travels up the West Coast to Blaine, Washingtona city whose northern boundary borders Canada.I-15: 1,433.52 milesInterstate 15 originates in California in San Diego's Mission Valley. Its northern terminus is at the US-Canada border in Sweetgrass, Montana.See the rest of the story at Business Insider
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