unrelated

I just got my bike sent to me from home after leaving it in the dust for 2 years.

So I want to get some mud on it before winter hits. Can anyone tell me where I can go around Detroit area? I tried to search online but either I have to pay to access the websites, or they are advertisements of trail guides.... which I will get eventually.

So if you can help, preferably within 45min drive from Detroit. Thanks a lot!!!