As promised, here's your official info post for today's ride up to the boonies. We'll be meeting at Porter Square (in Cambridge) at 4:30 p.m. like we did on Tuesday. This afternoon's route will take us up to Bedford and then out on a loop west to Concord, down toward Lincoln, passing the DeCordova Museum + Sculpture Park (http://www.decordova.org) and the Walter Gropius house (http://www.spnea.org/visit/homes/gropius.htm), back up past Hanscom Field, and returning into Bedford, before we come back down to Cambridge. Total distance: approximately 40 miles. Be advised, I'm going to try to take us on a trail marked as "hard packed dirt". I doubt it will be a problem for anyone's bike, and if it looks too crappy, we can always take a normal road instead, but nevertheless, you've been "warned".