The South Beyond 6,000 Challenge involves climbing 40 peaks that exceed 6,000 feet in elevation. The Carolina Mountain Club has information here.
The rules are really simple. You must hike at least 5 miles and gain at least 500 feet of elevation.
There are more than 60 peaks over 6,000 feet, but the peaks that were selected for the list must have a drop of 200 or more feet to a saddle between one peak and another qualifying peak or, there is a distance between the peaks of .75 miles.
All but one peak are in North Carolina or on the North Carolina / Tennessee border. Mt Le Conte is in Tennessee.
Many of the mountains are along the Blue Ridge Parkway. As a note of caution, the parkway may be closed in winter.
Steve's Outdoor Life 