Ottawa, Canada is pretty good for this. It's a pretty small city but has a few neighborhoods that would be considered walkable, while in 20 minutes you can be o

Ottawa, Canada is pretty good for this. It's a pretty small city but has a few neighborhoods that would be considered walkable, while in 20 minutes you can be out into the country. Compared with Toronto or Montreal where in 20 min if you're lucky you've entered a highway so you can sit in traffic for an hour to clear the city. Not sure about in the US.