The William O. Douglas Wilderness is a designated wilderness in the central portion of the state of Washington. It includes 169,081 acres (68,425 ha) located between the U.S. Route 12 and State Route 410 and is jointly administered by the Okanogan-Wenatchee National Forest and the Gifford Pinchot National Forest. It shares a boundary with the Mt. Rainier National Park on the west; Norse Peak Wilderness lies to the north, Goat Rocks Wilderness to the south. Approximately 25 miles (40 km) of the Pacific Crest Trail travel along the Cascade Range crest within its boundaries. It contains scattered peaks, sharp ridges, steep slopes and hundreds of small lakes and potholes.