One of the things that is never really clear, either in history or in RPG books, specifically around worldbuilding is: how far apart should someone travel and expect to run into a village or town?
I've variously seen "within a days walk", but what would that mean for realistic worldbuilding? Every 20 miles or so there would be another village or hamlet? In every direction? Or would it make sense to have "roads" or travelled areas through a kingdom, to the frontier, where there might be an Inn, or a small village, until one reaches the frontier?
So if you followed the roads from the capital to the frontier, you could travel fairly "safely" and have somewhere to stop every day?
Conversely, if you walked "cross country" in any kingdom (RPG or historical), you might not run into someone or a town ever... ?