Tri County Corridor is a hiking and biking trail in Douglas County and Bayfield County, Wisconsin. It is within Chequamegon-Nicolet National Forest, Chequamegon-Nicolet National Forest (Washburn District), Amnicon Falls State Park, and Brule River State Forest. It is 55.2 miles long and begins at 650 feet altitude. Traveling the entire trail is 110.4 miles with a total elevation gain of 2,918 feet.
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