SEPTA's subway–surface trolley route 34, also called the Baltimore Avenue subway line, is a trolley line operated by the Southeastern Pennsylvania Transportation Authority (SEPTA) that connects the 13th Street station in downtown Philadelphia, Pennsylvania, to the Angora Loop station in the Angora neighborhood of West Philadelphia. At 10.1 miles (16.3 km), it is the shortest of SEPTA's five subway–surface trolley lines, which operate on street-level tracks in West Philadelphia and Delaware County, Pennsylvania, and in a shared subway with rapid transit trains in Center City.