Lake Cowichan is a town located on the east end of Cowichan Lake and, by highway, is 27 kilometres west of Duncan, British Columbia. The town of Lake Cowichan was incorporated in 1944. The Cowichan River flows through the middle of the town. Cowichan River is designated as a Heritage River. Lake Cowichan is at the western end of the Trans Canada Trail, which, when completed, will be one of the longest trail networks in the world, almost 24,000 kilometres long.