In D&D terms, how wide would you say a hex is? Province scale (1 mile), Kingdom scale (6 miles), or something in between?
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In Tomb of Annihilation (dnd 5e), they used a 10 mile scale, with the idea that players could travel through one hex a day on foot. In The Swordfish Islands, hexes are 2 miles wide each, and players can traverse each tile in 4-hour increments. So it really just depends on the type of adventure you're running!