M209 is very short taking you from M109 to the "ghost town" of Glen Haven which is owned by the National Lake Shore/ Sleeping Bear Dunes Park. It is an interesting little place with a number of cool historic sites to check out.

M109 takes you from Glen Arbor to M22 just north of Empire. Along the way are incredible views of the Sleeping Bear Dunes and Little Glen Lake. M109 also has wide and biker friendly bike lanes for your safety.
 
 

Above: looking to the southwest from M109 towards the Day Farm Above: a barn in the ghost town of Glen Haven on M209 Above: the old Sleeping Bear Hotel in Glen Haven The Glen Haven General Store on M209