Complex sentence: The first section of M-28 designated as a part of the Lake Superior Circle Tour is from the western terminus to the eastern junction with M-64 in Bergland, where the Circle Tour turns north along M-64, leaving M-28.
Split into simpler sentences: The first section of M-28 designated as a part of the Lake Superior Circle Tour is from the western terminus to the eastern junction with M-64 in Bergland. The Circle Tour turns north along M-64, leaving M-28.