I rode Gladwin one time early winter and I remember one loop being good and the other was under a lot of water.
I generally ride St Helen, Ogamaw, Ambrose, Mio, Bullgap and
Black Lake that's in Cheybogan.
Black Lake is the best of all and a group of stay at The Bluff Campgrounds.
You ride right off the site and it has a Restaurant/bar right on site.
We pretty much stay east of 75
Merry Christmas to You !