4.0 star · Difficult Out and Back

Rat Lake and Garnet Mountain Trail

Custer Gallatin National Forest · Gallatin County, Montana

Trail length

12.5 km

Time

~3 hrs 31 min

Elevation Gain

614 m

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"An epic challenge to remember from the heart of Gallatin County"

The Rat Lake and Garnet Mountain Trail is a 12.5 km looped trail that starts and ends in Gallatin Gateway, Gallatin County, Montana. Based on our data, the trail is graded as Difficult. For information on how we grade trails, please read measuring the difficulty of a hiking trail on hiiker. Also, check our latest community posts for trail updates.

This trail can be completed in approx 4 hrs 40 mins. Caution is advised on trail times as this depends on multiple variables. For more info read about how we calculate hike time.