High Quality Content by WIKIPEDIA articles! M-38 is an east–west state trunkline highway in the Upper Peninsula (UP) of the U.S. state of Michigan. Its west end starts in Ontonagon and runs east to Baraga, some 42.225 miles (67.955 km) apart. The highway crosses streams and rivers in forest lands and provides access to a casino. The east end is located by the Keweenaw Bay of Lake Superior in the Keweenaw Bay Indian Community.