Road trips are a staple of travel all across the world. But with its car-heavy infrastructure and intricate network of interstate highways and scenic routes, the United States has arguably the greatest concentration of excellent road trips of any country on Earth. America's extensive road trip offers range from the oldest still-operational road in the country at Boston Post Road , to America's longest (yet still underrated) highway along Route 20 , all the way to overlooked scenic gems like the Flint Hills National Scenic Byway .

So abundant are amazing American road trips that drivers can spend years exploring the country by car and still have worthwhile road trip routes left to explore. Many of the country's most scenic, historic, and culturally significant road trips fly under th

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