U.S. Route 66

Former US Highway between Chicago and Santa Monica

U.S. Route 66 or U.S. Highway 66 (US 66 or Route 66) was one of the original highways in the United States Numbered Highway System. Established on November 11, 1926, with signage erected the following year, the highway ran from Chicago, Illinois, through Missouri, Kansas, Oklahoma, Texas, New Mexico, and Arizona before terminating in Santa Monica, California, covering 2,448 miles (3,940 km). US 66 became a major route for westward migration, especially during the Dust Bowl of the 1930s, and contributed to the economic development of communities along its path.

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