You searched for: Place Onstead State Game Area, in the Upland Game Management Area. Take the trail past the sign indicating the Upland Area down to the first marsh. About 70 km SW of Ann Arbor. Remove constraint Place: Onstead State Game Area, in the Upland Game Management Area. Take the trail past the sign indicating the Upland Area down to the first marsh. About 70 km SW of Ann Arbor.