I would say that you'd be hard pressed to find a city of any moderate size where it was not possible. Some would be better than others, but it's possible nearly everywhere.

I drove and walked all over SF a few months ago, and while I agree it’s feasible, the lack of bike lanes is disheartening, much worse dedicated ones. Your standards are so much lower, it looks like your tax money goes into a blackhole never to be seen again, and I’m saying that from a very corrupt third-world country.