For an out and back, Mosquito Meadows Trail #102
is probably a better option for access to the Bitterroot - Rock Creek Divide Trail South
313, but this trail makes for a pleasant return option for a loop.
The upper ridge is a great moderate ridge, lower down the trail degenerates into a old ATV trail and then a decommissioned road that is returning to singletrack. Expect to push in sections if starting from the bottom.