How long does it take to travel in the Underdark?
Eric Boyd explains: Here’s a rough rule of thumb you can use for estimating Underdark travel times, assuming the travelers have sufficient magic & equipment to handle the terrain. a) Locate the starting point and destination on a map of the surface Realms. Determine the distance in miles between the two points as the crow flies. b) If there is a regular trade route between the two points, triple the distance. c) If not, determine if either point is wholly cut off from the rest of the Underdark. d) If not cut off, multiply the distance by 10. e) If cut off, repeat the algorithm twice, but this time calculate the distance between the starting point and the nearest surface exit, the time to travel to the destination from the nearest surface entrance, and add those times to the time it takes to travel across the surface. f) Once the distance is established, use the movement charts in the FR boxed set for rough terrain. g) Don’t forget to use the tables in the DMG for determining if the tra
