The King's Highway was a roughly 1,300-mile (2,100 km) road laid out from 1650 to 1735 in the American colonies. It was built on the order of Charles II of England, who directed his colonial governors to link Charleston, South Carolina, and Boston, Massachusetts. The section north of New York City, laid out on January 22, 1673, became the Upper Boston Post Road. The road was finally completed in 1735. Much of the Post Road is now U.S. Route 1 and U.S. Route 20. In Pennsylvania, much of the route is now U.S. Route 13. (In Philadelphia, Route 13 becomes Frankford Avenue.)