T-Third Light Rail

The T-THIRD Metro line connects all of the Third Street neighborhoods to the full Muni Metro system, providing a vital link between the southeast sector of San Francisco and the rest of the City. It also gives San Francisco over 70 miles of light rail track. One fare on the T-THIRD takes you to both of the ballparks, City Hall, the Embarcadero, the Bayview Opera House, and more.

http://www.sfmta.com/cms/mroutes/tthirdsvc.htm