I just posted an article by Jeb Stewart on the Winter Bike League in Athens, Georgia. At its core, it's a bunch of cyclists getting together for group rides between December and February, but really there's so much more to it than that. Check out the article: http://www.active.com/cycling/Articles/Winter-Bike-League_-Innovative-Off-season-Training.htm

Have you ridden in the Winter Bike League? Or are there similar group rides near you?