Angela Acerno

One April morning I left the Mexico border and walked north on the Pacific Crest Trail. For five months I hiked through the California desert, the snows of the Sierra Nevada, and the Cascade Mountains of Oregon and Washington. My goal was to succeed in an epic challenge: to hike 2,650 miles and reach Canada before the October snows.

The conception and building of the Appalachian Trail is a story of unforgettable characters who explored it, defined it, and captured national attention by hiking it. From Grandma Gatewood—a mother of eleven who thru-hiked in canvas sneakers and a drawstring duffle—to Bill Bryson, author of the best-selling A Walk in the Woods, the AT has seized the American imagination like no other hiking path. The 2,000-mile-long hike from Georgia to Maine is not just a trail through the woods, but a set of ideas about nature etched in the forest floor.