Ten Fun Facts

About the Appalachian Trail, by Martin Mazloom in USA Today.

About 165,000 white "blazes" -- 2-by-6-inch paint marks on trees, posts and rocks -- mark the direction of the trail.

Two-thirds of the U.S. population live within a day's drive of the AT.

It takes about 5 million footsteps to complete the entire length of the Appalachian Trail.