Players Handbook (page 39)
For purposes of the game distances are basically one-third with respect to spell and missile range from outdoors to indoors/underground situations. Thus most ranges are shown as inches by means of the symbol ", i.e. 1", etc. Outdoors, 1" equals 10 yards. Indoors 1" equals 10 feet. Such a ratio is justifiable, to some extent, regardless of game considerations.
Movement scale is kept as flexible as possible in order to deal with the multitude of applications it has, i.e. dungeon movement (exploring and otherwise), city travel, treks through the outdoors, and combat situations arising during the course of any such movements. Your referee will have information which will enable him or her to adjust the movement rate to the applicable time scale for any situation.
House Rule
Movement on a grander scale is better described in the Atlas article Getting from A to B
Comments