" .. ingame map is suppose to be litteral transcription of the world. :P
There is nothing in the game to suggest otherwise. The "literal transcription" is the map as it is. Greater distances are 100% a product of one's imaginations. How far is Moonhaven from the Druid Grove? There is only one literal answer and could be reasonably estimated by observing a character moving from one to the other.
Any other suggestion is pure imagination and I would guess varies from player to player. There is no possibility of standardization beyond the actual literal distance present in the game (which as far as I know does not even provide any dialogue or text to suggest what those distances are)
Here we go again. Let's not discuss the smashed together map for the 1 mil time.
Off topic. This is not about the map. It's about wanting Day/Night cycle and why.