How far apart do you imagine each world within Sims 4 to be from each other?

It depends on which game save I'm playing. For instance, in my ancestral game save, Willow Creek is the Shenandoah Valley in Virginia. Newcrest is the Holston/Watauga Settlements about three hundred miles southwest. Brindleton Bay becomes Old Frederick County in VA and Windenburg Dunmore County. My sixth great-grandparents moved around a lot before they took that very long trek to the Southwest, which ultimately became Tennessee.

For my other save, the neighborhoods are much closer to each other. My teens go about all of the time.