Mount Washington Wilderness was created in 1964.
The area of Mount Washington Wilderness is 212.525 square kilometers.
Mount Timpanogos Wilderness was created in 1984.
Mount Grafton Wilderness was created in 2006.
Mount Trumbull Wilderness was created in 1984.
Mount Rainier Wilderness was created in 1988.
Mount Massive Wilderness was created in 1980.
Mount Evans Wilderness was created in 1980.
Mount Thielsen Wilderness was created in 1984.
Mount Logan Wilderness was created in 1984.
Mount Skokomish Wilderness was created in 1984.
Mount Baker Wilderness was created in 1984.
Mount Hood Wilderness was created in 1964.