I am going to be at BU for about three weeks in June (during the week) for a work related training. While I am up there I am looking to get in some decent 20 - 35 mile rides during the week. SOme in the morning...some in the afternoon. Commuting to and from BU may be an issue so I am looking for advice on decent rides in and out of the city. Nice route out of the city to get to less traveled roads?