Fs 458 is a hiking, biking, and horse trail in Gallatin County, Montana. It is within Gallatin National Forest. It is 2.1 miles long and begins at 6,885 feet altitude. Traveling the entire trail is 4.2 miles with a total elevation gain of 1,042 feet. Chestnut Mountain (elevation 7,667 feet) can be seen along the trail.
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