Hmm, do you have any other similar rides, but not so close to Boston or on weekends? I can't make the time and place -- I work in Shrewsbury and live in Marlboro and already have a Tuesday night commitment anyway up in Holden -- but I'm interested in joining more group rides, particularly on weekends.

Also, general question: I ride alone, and I have some general group-riding etiquette, but no real paceline experience. When I ride by myself on 50+ mile rides, I average about 15 mph; riding with people on the STP last year, I averaged 15.9 mph over 200 miles. I guess puts me smack in beginner too, huh?