It took her two tries, but in 1955, sixty-seven-year-old Emma "Grandma" Gatewood became the first woman to solo hike the entire length of the Appalachian Trail in one thru-hike. Gatewood, who left an abusive marriage after raising eleven children, has become a legend for those who hike the trail, and in her home state of Ohio, where she helped found the Buckeye Trail. In recent years, she has been the subject of a bestselling biography and a documentary...