F South 133 is a hiking, biking, and horse trail in Gila County, Arizona. It is within Tonto National Forest and Hellsgate Wilderness Area. It is 12.0 miles long and begins at 5,231 feet altitude. Traveling the entire trail is 8.9 miles with a total elevation gain of 1,413 feet. The Thurlo Tank (elevation 5,420 feet) reservoir is near the trailhead. The Board Tank (elevation 5,630 feet) and Fuller Mesa Tank Number Two (elevation 5,643 feet) reservoirs can be seen along the trail.
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