The Wonderland Trail is an approximately 93-mile (150 km) hiking trail that circumnavigates Mount Rainier in Mount Rainier National Park, Washington, United States. The trail goes over many ridges of Mount Rainier for a cumulative 22,000 feet (6,700 m) of elevation gain. The trail was built in 1915. In 1981, it was designated a National Recreation Trail. An estimated 200 to 250 people a year complete the entire trail with several thousand others doing shorter sections of it. The average time taken to complete the entire trip is 10 to 14 days.