take boston chinatown bus (fung wah) to NYC (takes about 4 hours) for $15. In NYC take ANOTHER chinatown bus (i think it actually picks you up somewhere mid town-you can google it) and for another $20 it will takke you to Blatimore travel plaza. It's the cheapest way to go.
21

cambridgtrav
fung wah boston to NYC is no cheaper than Greyhound and they are better at going through toll booths
22

johnavery
By car with no traffic Boston to Baltimore about 7 hours. I will guess 350 miles. The cheapest way is the Chinese buses. Take a Chinese bus from Boston to NYC and then NYC to Baltimore but then you need to figure out where to sleep in NYC. Maybe you can sleep on the bus and drink all night in NYC. You are paying $30 or so for the bus.
Pro tip
