I live in waltham, MA, about ten miles from where I work in Boston's back bay.
But my most regular because I want to ride is to head west on route 117, and wind up on great back, country roads in Westin, Lincolna and other towns. I go past the Dcordova Museum (a modern art museum surrounded by a huge sclupture park), past the gropeius house, past Walden, and into Concord center. Sometimes I go Carlisle. Those roads are great, rural, they go past horse farms and vegetable frams, ponds and lakes, battlefields from the revolutionayr war, etc. 20 to 35 miles, depending on what I do.