I used to live at Crooks and Hamlin in Rochester Hills and rode Clinton River trail almost every day to help get in shape. It was convenient as it ran right behind our apartment. Nothing extreme but a nice ride for a rail trail. Picked up a few other trails from there and took it up until it ended at 29 mile and Van ****. Moved back to the Flint area last October so I am looking for trails around here. Not having any luck though so for the most part it is looking like we pack up the bikes and head back down that way when we want to do any trail riding.