There are other routes besides Whitney Portal that lead to Mt. Whitney. They begin at less heavily-used trailheads, but require a much longer hike to reach the summit. The High Sierra Trail leaves from Giant Forest on the west side of Sequoia National Park, and is about 60 miles (100 km) one-way. It takes a minimum of 6 days (one way) or 10 days (round trip) to complete. The Sequoia Parks Conservancy's bookstore offers books and maps for planning hikes to Mt. Whitney and elsewhere in the Sequoia and Kings Canyon areas.