Maybe just a general sense of scale rather than any specific measurement? The old Earthdawn box set made the point of saying that the visible map was equal to 40 days non-stop as a horse rides, edge to edge, which is suggestive without being particularly granular. I always liked that as it gave the map a scale that you could about travel across in a season if you pressed but also space to get lost, wander and make long distance travel just dangerous and time consuming enough that it wasn't accomplished easily. Made it very clear that it wasn't the entire world but a big enough stomping ground that there was room enough for things to be secret or lost in the corners of the landscape.
Edit History
Maybe just a general sense of scale rather than any specific measurement? The old Earthdawn box set made the point of saying that the visible map was equal to 40 days non-stop as a horse rides, which is suggestive without being particularly granular. I always liked that as it gave the map a scale that you could about travel across in a season if you pressed but also space to get lost, wander and make long distance travel just dangerous and time consuming enough that it wasn't accomplished easily. Made it very clear that it wasn't the entire world but a big enough stomping ground that there was room enough for things to be secret or lost in the corners of the landscape.