Route 66 is a historic highway in the United States that originally ran from Chicago, Illinois to Santa Monica, California. Established in 1926, it became a symbol of American freedom and adventure, connecting small towns and major cities across eight states. The route spans approximately 2,448 miles and was often referred to as the "Main Street of America." It played a significant role in the migration westward during the Great Depression and became popularized in popular culture through songs, movies, and television shows, highlighting its importance in American history.