At the Lincoln Hills trailhead, take the biker's singletrack (which quickly joins the hiker's singletrack) for a steep climb up to the saddle road.
On the saddle road, continue past the Sound of Music
singletrack that comes down the ridge, then take a left turn (a graveled road) and start climbing. Next, keep left again--do not take the right fork which goes to a residence. Continue climbing on the doubletrack, which loses a little elevation and then climbs to the end. The last hundred feet are steep but smooth.