ElevationAscent: 1,758' 536 m
Descent: -1,758' -536 m
High: 7,006' 2,135 m
Low: 5,273' 1,607 m
GradeAvg Grade: 10% (6°)
Max Grade: 27% (15°)
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“A moderately challenging run up Chestnut Mountain to excellent views of Bozeman and the surrounding mountain ranges.”— Amber Scott
A little over a mile into the run, the Frog Rock Trail #463 departs to the right and contours west to an outcropping of rock that is popular with climbers. Check out the rocks if you wish, but otherwise continue uphill on the Chestnut Mountain Trail #458 as it proceeds south. You'll still be able to see Frog Rock from the trail as the rocky outcroppings are prominent and visible directly to the west. Much of the early trail passes through forested areas and the occasional meadow, which, in the summer time, are usually full of wildflowers.
As the trail climbs up the mountainside, the clearings offer increasingly expansive views of the surrounding mountains ranges. Look for the Bridger Mountains to the north, the Crazy Mountains to the northeast, and the Tobacco Root Mountains to the west. There are occasional glimpses of Interstate 90, and Bozeman is visible from higher up.
The trail continues to switchback up the mountainside for over three miles, and reaches the ridgeline at about 3.3 miles. The views open up as the trail passes through some larger clearings. Either enjoy the views and then head down for a 6.8 mile round trip run, or continue along the Chestnut Mountain Trail #458 as it follows the ridgeline for a longer outing. The summit of Chestnut Mountain is 5.2 miles from the trailhead, so running to the peak and back would be 10.4 miles roundtrip.
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