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Summary:State Route 1 is a major north–south state highway that runs along most of the Pacific coastline of the U.S. state of California. At a total of just over 656 miles, it is the longest state route in California.
Description:State Route 1 is a major north–south state highway that runs along most of the Pacific coastline of the U.S. state of California. At a total of just over 656 miles, it is the longest state route in California.