Chances are you'll be running this as part of Critical Mistakes, however, there is no reason that this couldn't be done as an out and back. The climb is manageable and the return downhill makes it worth it. There is a pond about three miles up that can be a nice place to stop and look around. Just above this the trail gets steep for about 0.5 miles as it traverses a rock laden meadow. After the meadow it is a pleasant meandering over to the Bitterroot - Rock Creek Divide Trail South (313).
Finding this trail at either end is a challenge. Off the East Fork Rd, there is no pull out at the trailhead, just a sign along the road that is easy to miss. The trail junction with Bitterroot - Rock Creek Divide Trail South (313) is even worse, an unmarked trail exiting off a doubletrack.