Suburbs are intentionally designed to not be walkable.

To get to the neighbor behind my house, without cutting anybody's yard, I have to walk about a mile. We aren't far. His daughters play with my sons through our shared fence.

And that's a modest example. Plenty of cul de sacs that are "close" to the main street, as a crow flies but a lot further if you're an East Asian Chinchilla Monkey running as fast as you can.