Highland is popular with hunters during deer season. Check the Michigan DNR site for exact dates and wear orange when appropriate. A Michigan "Recreation Passport" is required to park at the trailhead.
From the trailhead on Livingston Road, ride the A Loop (3.8 miles). Your time is spent navigating rocks and roots on this narrow singletrack-lovers heaven. There's plenty of off-camber trail to keep you on your toes, too. Beginners should ride this trail with other experienced riders; it is a challenging ride. With all of the switchbacks, it will be slow going with few options to cut back to the trailhead.