The Appalachian Trail is the longest hiking-only trail in the world, measuring almost 2,200 miles. It is estimated that more than 2 million hikers hike at least part of the trail each year. Hikers that hike the entire trail in a given year are known as thru-hikers. The northern terminus of the Appalachian Trail is on Mount Katahdin's Baxter Peak in Baxter State Park. The most isolated portion of the Appalachian Trail, known as the "Hundred-Mile Wilderness", is in Maine. The closest town to Mount Katahdin is Millinocket which is home to the Appalachian Trail Lodge. Established as a boarding house in 1906, it has hosted hikers since 1988. In 2006, two former trail hikers took over and now offer a broad range of services for hikers including the Ole Man's Gear Shop.