The trailheads in the Thompson Creek area can be cryptic, and this one is no exception.
From the Thompson Creek Road #306, there is minimal to no sign of a trail. From the end of the road, head back downhill a couple hundred yards or so. You may see some cut logs and a slight hint of trail. Leave the road and walk downhill through the grass until you get to the creek. On the other side of the creek, you'll see a very obvious trail heading up the other side. There is no sign.
Cross the creek and follow the steady but rideable singletrack up through the dark timber. You'll soon wrap around and go in and out of meadows as the grade mellows.