only 59 people completed the trail from 1936 to 1969 Appalachian Trail Conservancy thru-hike statistics this "Appalachian Trail Conservancy - 2000 Milers" Appalachian Trail Conservancy "2,000-Milers: Facts and Statistics" "Appalachian Trail Conservancy - 2000 Milers" AT 2008 "2,000-Milers: Facts and Statistics" AT 2008 AT 2008 "Appalachian Trail Conservancy - 2000 Milers" completion rate of around 25% AT 2008 "2,000-Milers: Facts and Statistics" AT 2008