Map and Travelling Rules
Movement is a Stat on your character sheet, and it is essentially the number of miles you can travel in a 12 hour period. As a party, the group will be forced to move at the rate of the slowest party member.
Each hex on the Map equals roughly 2 miles. Certain kinds of terrain will affect the cost of moving through that hex. The DM will be responsible for making all calculations for moving through hexes.