It sometimes snow a lot where I live and I ahve a big yard around my house that is good for running. It is on a hill and over 1/4 miles around. We haven't had any really deep snows yet since I got back this year, but last year we had some knee deep snows that were awesome for running. It is a great workout. You can also try just walking in it if you put on a heavy pack, which I have been trying out this year since the snow hasn't been as deep.
Also, I go sledding with my little cousins in it and hiking with them when they come up from the city, and they are just the right size to get pulled up the hill at a running pace (which they like too) or on long hikes when their little legs get tired, they can add some extra weight for me.
Deep snow is good.