The Alaska Mountain Wilderness Classic (sometimes called the Alaska Wilderness Classic) is an adventure challenge that espouses purity of style and zero impact. Started in 1982 as a 150-mile (240km) wilderness traverse, the Classic has crossed various mountain ranges throughout Alaska with some routes covering nearly 250 miles (400km). Traditionally, the same route has been used for three years in a row, with each year being a different month (June, July, or August).
The rules are simple: start to finish with no outside support, requiring that participants carry all food and equipment; human-powered; leave no trace; and rescue is up to the individual to resolve. The most common form of transportation is by foot and packraft, although bicycles, skis, and paragliders have been used by intrepid participants. Beginning in 2004, participants have been required to carry satellite phones or Satellite emergency notification device like the DeLorme inReach to facilitate emergency rescues.
The organization of the challenge is grass-roots, having no affiliation to any organization or group, while generally fewer than 30 people enter in any one year. The Classic is often perceived as a race, but most certainly not a race.[clarification needed] It has had an influence on American adventure racing, backcountry use of the packraft, and ultralight hiking is significant[citation needed]. In addition to the summer challenge, there is an even more low-key unaffiliated winter event, the Alaska Mountain Wilderness Ski Classic, which has taken place annually since 1987 with travel through the Chugach Mountains, Alaska Range, Brooks Range, and Wrangell-St. Elias.