This trail is some winding and narrow singletrack. It has a nice series of uphill/downhill sections - typically with a fairly sharp switchback in loose sand at the bottom of each as it turns to head back up the hill. Brake early and keep your momentum around the turn to start the uphill! There are some narrow sections that wind between small trees. About half-way around the loop the trail opens into a pretty hollow, and there is a wooden bridge right by the Hidden Rise.
The loop is the furthest from the San Felasco trailhead. Head southwest once you reach the Pine for You loop and there is a short connector to Hidden Rise. Plan for at least an hour and a half ride to get here, ride the loop, and get back to the trailhead.