High Quality Content by WIKIPEDIA articles! U.S. Route 224 is a spur of U.S. Route 24. It currently runs for 289 miles (465 km) from New Castle, Pennsylvania at Pennsylvania Route 18 to Huntington, Indiana at U.S. Route 24. It passes through the states of Pennsylvania, Ohio and Indiana. It goes through the cities of Youngstown, Ohio, Akron, Ohio, and Findlay, Ohio.