This is a good ride for beginner mountain bikers. Park at the north gate [you'll need to climb over gate] Follow the path across the drainage and up the hill to the dam. Cross the dam and follow the Spillway sign.
This trail goes by the spillway where you can take in views of the Moore Creek Valley. From the spillway it winds through hardwood forest, and joins up with the Piney Loop. The Piney loop takes you through a pine forest with some great downhill, windy trail experiences. The trail ends at the Lake Loop where you'll take a right and head back to the dam for the return to the parking area.
Overall, these two loops can be a very fast twisting run, little elevation change, and consistent trail quality. Multiple laps of these two loops can quickly add up to several miles of cardio in a short time -- great for an after-work ride and still have time to get chores done.