Yeah Toronto has the PATH system and you can get around much of the downtown core that way (though I prefer not to...). Toronto itself is really quite walkable for hours in most directions if you live downtown. However to get to anything in further reaches of the city—Scarborough, Etobicoke, or Vaughn—it's far better to have a car. Living downtown and visiting the zoo on transit is a long stretch ;)
Calgary also has a skyway network (called the Plus-15 http://plus15.com/). Living there one winter was odd to me after Toronto—you'd never see anybody on the streets. And downtown Calgary is reasonably quiet on a normal, nice day. That said that town is also quite walkable—though it's best parts are relegated to certain parts of the city that are separated by less interesting areas.
Victoria, BC is one of my favourite walkable places so far. I also really enjoyed my time in Montreal, but I'm a little conditioned to the cold.
Calgary also has a skyway network (called the Plus-15 http://plus15.com/). Living there one winter was odd to me after Toronto—you'd never see anybody on the streets. And downtown Calgary is reasonably quiet on a normal, nice day. That said that town is also quite walkable—though it's best parts are relegated to certain parts of the city that are separated by less interesting areas.
Victoria, BC is one of my favourite walkable places so far. I also really enjoyed my time in Montreal, but I'm a little conditioned to the cold.