Line 2 of the Nanjing Metro is a subway line that runs mainly in an east-west direction on the Nanjing Metro network, running from Jingtianlu to Youfangqiao; it entered operation on May 28, 2010. It covers a length of 37.95 km (23.58 mi) with 26 stations. Of the 26 stations, 17 stations are underground, 2 stations are on the surface, and the other 7 station are either above ground or elevated stations.