There are two choices to access this trail. First, park near the end of Sleeping Child Rd where it intersects with Black Tail Rd
and Two Bear Rd and gravel grind up Black Tail Rd
and then take FS 273 for about 14 miles and make a huge loop along with the South Fork Sleeping Child #84
and Sleeping Child Trail #105
If you want to shuttle, drop a vehicle here and drive up. Plan on 30 to 45 minutes each way to get to the trailhead. I suppose an out-and-back is possible; I've never tried it.
OK, there is a third option; park at the trailhead, ride the trail and piece together some backroads to return. If you want to do that, I assume you are the adventurous type, so grab some maps and figure it out.
From the last paragraph, you have probably figured out that just getting to the trailhead takes a commitment. If this trail didn't begin and end in the middle of nowhere it would probably be one of the more popular rides in the Bitterroot with its great views and non-technical riding. There are no big climbs or descents, just mostly pleasant rolling terrain with a few punchy climbs.