The western half, between Yucca Ridge and Barham Ridge, is an easy, wide fire road, but has some of the steepest slopes I've ever tried to climb before. Some real nasty stuff. Avoid if you can.
The eastern section, from Barham Ridge east to Deer Trail, is an awesome singletrack with rock features and tight turns. Folks use this section to climb up from the east, so consider it a two-way and be on the lookout.
At the intersection of this trail and Deer Trail is the beginning of Weir Canyon Loop.