Black Friday Ride at Rolling Hills Join the Potowatomi Mountain Biking Association's 17th Annual Black Friday MTB and Gravel Ride at Rolling Hills and Hewens Creek parks in Ypsilanti Township takes place on Friday 11/28 at 10 AM. This event is a fun, casual, no-drop group ride and is a great chance for novice MTBer's to get exposure to single track & […]