U.S. Route 13 (US 13) is a U.S. highway running from Fayetteville, North Carolina north to Morrisville, Pennsylvania. The route runs for 49.33 mi (79.39 km) through the Philadelphia metropolitan area in the U.S. state of Pennsylvania. The route enters the state from Delaware in Marcus Hook, Delaware County. It continues in a northeasterly direction through Delaware County, passing through the city of Chester before heading through suburban areas along Chester Pike to Darby. US 13 enters Philadelphia on Baltimore Avenue and runs through West Philadelphia to University City, where it turns north along several city streets before heading east across the Schuylkill River along Girard Avenue. The route turns north and heads to North Philadelphia, where it runs northeast along Hunting Park Avenu