At 80 years old, Betty Kellenberger recently became the oldest woman to ever hike the entire Appalachian Trail.
Dave McClung, 82, hiked eight days and 17,598 feet to reach South Base Camp at Mount Everest. He may be the oldest to ever do it.
Learn about the importance of redesigning hiking trails to minimize erosion and improve hiker experience. Experts share tips on trail design and maintenance.