By Michael Lanza
Olympic, Grand Canyon, Yosemite, Glacier, Zion, Grand Teton, Mount Rainier, Canyonlands, Sequoia, Great Smoky Mountains. To backpackers, these names read like a list of America’s greatest cathedrals in nature—and no surprise, because these parks harbor some of the most scenic wilderness trails in the country. Hike any of them and it will earn a spot on your personal top-10 list. Knock off every trip on this list and you will experience some of the finest landscapes not only in the nation, but on the planet.