http://www.gmap-pedometer.com/ is good for making your own routes, its what I use. There's the rail trail that runs behind the metro plaza that isn't too bad as long as there isn't much snow, it just gets kinda muddy. Also, you can run down the longwood hill in westdale and do a bit on the paved trails there.
Every thing gets kinda slippery and sucky but running on packed snow isn't bad. Today was bad for a run! Yuck, very slippery.