Google Maps transit directions give a half hour for the actual bus ride once it leaves Alewife; add in waiting time for the bus, wait and riding time for the Red Line, and some fudge for traffic and I'd allow an hour (more if I was planning on being there at a a particular time for a panel or dinner get together).
I generally aim for the 5:40pm bus and just plan for dinner in Burlington rather than eating in Cambridge.
no subject
I generally aim for the 5:40pm bus and just plan for dinner in Burlington rather than eating in Cambridge.