This Last Spring and Summer I tried to hit all the Mountain Bike Trails in South East Michigan. Below is A map I pulled from the Michigan Mountain Bike Association (MMBA.org).

I recommend hitting them all but if you want my opinion on which are the best, I would say as follows:

1. Lakeshore Park - Best overall trail as it is very well maintained, used for many of the MMBA sponsored racing events

2 Highland State Rec Area: This is the most challenging course in SE Michigan and should only be tackled after hitting some of the others first

3. Hickory Glen: a Great course that is tight and technical and rarely crowded

4. Pontiac Lake: A great 9 mile trail that requires stamina more than technique.

Michigan is a great place for outdoor state and Mountain Biking is another example of this.