If you have a GPS, the club as a bunch Adventure ride files that you can download. Locally there are Oakland County and Washtenaw County tracks, but several across the lower peninsula. They are mostly dirt road and a little two-tracks. Ones up north get trails and sand. Under the top menu “Club Activities and Breakfast”, check out the “GPS File Downloads”. For what can be better descriptions, scroll through the “Rides” forum to see what members say when they posted the file. There is also riding area in Maumee, OH, which I understand is mostly sand.
Watch the Forums. Several of club members participate in Backroad Discovery Route (BDR) rides. Rides which are held in the Northeast, Mid-Atlantic, New Mexico, Utah and California.