Mazatzal Wilderness is a wilderness area of about 390 square miles (1,000 km2) in Yavapai and Gila counties in the U.S. state of Arizona. The wilderness is within the Tonto and Coconino national forests. The town of Payson is to the east, and the Verde River is to the west. During summer, temperatures in the wilderness often exceed 110 °F (43 °C). About 240 miles (390 km) of trails cross the wilderness. These include the Verde River Trail, which follows the river for about 28 miles (45 km) and the Mazatzal Divide Trail, which runs north–south for about 29 miles (47 km).