According to WalkScore, San Francisco is the most walkable city in the U.S. Well, I could have told you that :). It's one of the reasons I love the city and our neighborhood, just about anything you could want from gyms to parks to schools to grocery stores is within a quarter mile walk. If you look at the 'walkability' map of San Francisco, you'll notice the places with the least walkability are actually parks for the most part (though there are some neighborhoods that could use a bit more 'walkability'.
Walkability definitely is not the only criteria that would make a city livable, climate (check), mass transit (check), outdoor activities nearby (check), job possibilities (check), beauty (check), great people (check) and a few other criteria would make a city a livable city. Oh, and there is one more, affordability. Oh.. oops, San Francisco is near dead last in that criteria. I guess that is due to all the other criteria. Sigh.
