Winter doesn't make biking impossible, just challenging. Get a basic aluminum mountain bike, put studded tires on it, and dress pretty much the same as you would for skiing (but with right pant cuff held down somehow). Make sure to clean salt off the bike, or you'll have to replace components more often. Way more here: http://www.icebike.org/ and here: http://bicycles.stackexchange.com/questions/tagged/winter?so...