Just 75 miles (120 kilometers) from Washington, D.C., visitors to Shenandoah National Park in Virginia can witness the majesty of the Blue Ridge Mountains and Shenandoah Valley while driving along the 106-mile (170-kilometer) Skyline Drive. Hikers intent on exploring the more than 500 miles (800 kilometers) of trails should look for white signposts that indicate the legendary Appalachian Trail.