I also wonder what sorts of distances people think of as "far" in this thread. I've lived in both suburbs and in NYC. It's easy to walk a mile in the city without realizing it, whereas that is sometimes unthinkable to suburban folks. But if I walk a mile from my house I hit: woods, trails, the downtown area, the train station (to NYC), a school, fields, and etc.
At least in the U.S. - think it matters quite a bit where you are. Lots of areas in South and West were developed entirely around car use whereas suburbs in the Northeast can be quite tightly packed.
In my mind, this is another the under-rated aspects of parts of NYC - grids. Simplify the process of walking, judging distance, knowing where you are.
The main downside is often the houses are packed in such a way that there's no path without going through someone's yard.
* The choice of city is due to personal experience, but I doubt it's unusual - e.g. I'm pretty sure it's exactly the same in/around Miami.