Northeast of Kalkaska in Kalkaska County, the Leetsville Trail is a 25 mile network open to dirt biking.
From the intersection of US 131 and CR 612 (Nash Rd.) in Kalkaska head east on CR 612. Travel just 2.25 miles and park on the left. If you reach Wheeler Lake Road, you've gone too far.
Overall, Leetsville Trail is the 29th most popular dirt bike trail of all 63 dirt biking rides in Michigan.