In my home town in Vermont there's a community supported set of trails... they have developed quite the network I think they're into the 30-40km range by now. Not bad for volunteers. When they set track with a snowmobile my brother would come home from work, groom most of the night and get a couple hours sleep before going again the next day. Anyway, they have their big fund raising party first week in February up on the trails at a cool spot up a hill about a quarter mile off the road. If it's a bad snow year sometimes it is dicey, one year it was so icy my brother actually floated the idea of the town sanding the hill so people wouldn't kill themselves walking up or back. They should get some decent cover this weekend, though.