the Oregon Volcanic Skyline Route traverses most of the state of Oregon, summiting 15 peaks from Mt. Hood to Mt. McLaughlin including the renowned Mt. Jefferson and the Three Sisters. It passes through a corridor made almost entirely of wilderness and a national park. The 420-mile route combines running, hiking, off-trail navigation, scrambling, and technical fifth class climbing and mountaineering. The Pacific Crest Trail is a major vein along the route, although as an open course, other trails, roads, and wilderness areas can be used to traverse from one peak to the next.