Hexcrawls are a fantastic D&D tool to help dungeon masters keep track of consumables, the distance their party travels, and note where interesting things exist on the map for players to explore. But setting up a hexcrawl doesn't have to be an overwhelming issue! Using these tips, you can easily set up your own!
US Letter HexGrid (Sorry, I'll make an A4 one soon): https://4.bp.blogspot.com/-Y9wgd2txy7Y/VUKzVL2GsfI/AAAAAAAAADg/Q-TXJC4_1O4/s1600/hexagonal.png
Hexmap of Europe, Circa 1200CE (50 mile hex): https://i.pinimg.com/originals/e4/47/1a/e4471a506a7b63c159ca0db7680ff576.png
