Burlington, Vt. is a haven for outdoor recreation. In summer: bicycling, running, hiking, in-line skating, kayaking, sailing, etc. etc. in the mountains, back roads, on the 12-mile paved rail-to-trail along Lake Champlain. In winter: all the skiing, snowshoeing, skimobiling, ice fishing, anyone could want.
Plus, with the University of Vermont and Champlain College, plenty of culture.
Drawback: expensive. Rents, food, taxes, utilities (especially heating in winter.