Nf-636 is a hiking, biking, and horse trail in Coconino County, Arizona. It is within Kaibab National Forest. It is 2.8 miles long and begins at 7,617 feet altitude. Traveling the entire trail is 3.8 miles with a total elevation gain of 523 feet. The Lobo Tank (elevation 7,500 feet) reservoir can be seen along the trail. The trail ends near the Stipa Tank (elevation 7,162 feet) reservoir.
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