You can take Rocky Ridge Trail, overlooking Canaan Valley all the way to the end. There is some fantastic scenery and extremely technical rock riding ahead. You will come to at least a couple mandatory (unrideable by anyone) hike-a-bike sections though they are not long. When you get to the end of that trail take Raven Ridge trail and then choose which other trails you wish to make your loop with. NOTE: THIS PLACE WILL NOT BE ACCESSABLE TO BICYCLES FOR LONG IF IT MAKES IT THROUGH THE SENATE TO BE DESIGNATED AS WILDERNESS AREA. SO DO YOURSELF A FAVOR AND GET OUT THERE SOON BEFORE IT'S OFF LIMITS.
Take Rt.32 south out of Davis WV, when you get to the long straight-a-way in Canaan Valley, turn left on Freeland Rd. just before Canaan Valley State Park. If coming from Harman, north on Rt.32, go just past Canaan Valley State Park and turn right on Freeland Rd. Follow this road till you come to gravel. Take the gravel road for about 60 feet and park on your right if you don't mind about a 2.1 mile climb on the gravel road. If you wish to cut out that climb you can go part way up the mountain and park or all the way to the top and park. The trail system starts just after the gravel road ends at some large mudholes. Pick up a map at Blackwater bikes before entering the area. There are numerous trails all interconnected making numerous routes to ride. A must do is Rocky Ridge Trail which takes you up on the ridge overlooking Canaan Valley.
http://www.singletracks.com/item.php?c=1&i=2706