The average bus between Porter Square and Back Bay (Station) takes 41 min and the fastest bus takes 24 min. The bus runs at least 4 times per hour from Porter Square to Back Bay (Station). The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run every 15 minutes between Porter Square and Back Bay (Station). The earliest departure is at 11:34 AM in the morning, and the last departure from Porter Square is at 11:54 PM which arrives into Back Bay (Station) at 12:23 AM. All services require a transfer at Massachusetts Ave opp Beech St and take an average of 41 min. The schedules shown below are for the next available departures.

41 min • 1 change

47 min • 1 change

42 min • 1 change

47 min • 1 change
Want to know about travelling from Porter Square to Back Bay (Station)? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Porter Square to Back Bay (Station). However, there are services departing from Porter Square station and arriving at Back Bay (Station) station via Harvard. The journey, including transfers, takes approximately 41 min.
Porter Square to Back Bay (Station) bus services, operated by MBTA, depart from Massachusetts Ave opp Beech St station.
Porter Square to Back Bay (Station) bus services, operated by MBTA, arrive at Massachusetts Ave opp Christian Science Ctr station.
The distance between Porter Square and Back Bay (Station) is 6 km. The road distance is 8 km.
You can take a vehicle from Porter Square to Back Bay (Station) via Massachusetts Ave opp Beech St, Harvard, Massachusetts Ave opp Holyoke St, and Massachusetts Ave opp Christian Science Ctr in around 54 min.