Big Rock Loop features 4 miles of hiking trails near Clarks Hill, SC.
From I-20 near Augusta, GA take SC Exit 1 (SC 230). Head north on SC 230 for about 5 miles. Turn left on Woodlawn Rd. Go approx. 4 miles, trailhead parking area for the southern trails are on the left. If you specifically want to ride Big Rock Loop, keep heading past this parking lot and make a left on Deepstep Rd. About 2-3 miles down Deepstep Rd, FS 661 (a gravel rd)will enter from the left. Turn up FS 661 and drive in until you reach the parking lot. You can also connect to Deep Step by bike if you ride back up Deepstep Rd towards Woodlawn. A connector entrance will be on your left.
http://www.tripleblaze.com/trail.php?c=3&i=1875