Near Baldwin in the Huron-Manistee National Forest, the Little O Trail and the Big O Trail have a combine 139 miles open to ATV riding. These routes connect up with the Michigan Cross Country Cycle Trail (CCC Trail).
To reach the trailhead from Baldwin, head north on SR37 for 9.5 miles to the trailhead parking on west side of road past Wolf Lake.
Note: As of September 2007, ATV riding on Forest Service roads is limited to ATVs with valid license plates.
Overall, Big O Trail is the 17th most popular ATV riding trail of all 54 ATV trails in Michigan.