Map right generated by LonelyPlanet.com free personal travel website service.
Few hikers carry a map to climb Misti.
You can get simple hand drawn maps from tour companies in Arequipa, but all you really need is the description in Lonely Planet Trekking in the Central Andes.
If you collect topographical maps of your hikes, IGN 1:100,000 Characato (sheet 33-t) is the one you want.
Pick it up at the Colca Trek agency in Arequipa, Jerusalan 401B.
You may want to consult an online map (they open in another window) while planning your hike:
