Marshall Mtn Fire Road is a hiking, biking, and horse trail in Apache County, Arizona. It is within Apache-Sitgreaves National Forests. It is 2.1 miles long and begins at 7,352 feet altitude. Traveling the entire trail is 4.3 miles with a total elevation gain of 238 feet. The Mortimer Tank (elevation 7,343 feet) and Hog Spring Tank (elevation 7,215 feet) reservoirs can be seen along the trail.