Southwest Michigan Mountain Routes
Cannonsburg Ski Area
As the title says, Cannonsburg is a ski area located just north of Grand Rapids, Michigan and doubles as a downhill course for many enthusiasts in the area.
Fort Custer
This is Rock 'n' Road Cycle of South Haven's rider choice for mountain biking in the area. Skill range is very broad so riders don't have to be experienced to have a good time. Located near Battle Creek, Michigan.
Ionia State Recreation Area
Located in Ionia, Mi this recreation area features rolling hills, open meadows, and forested ridges. These bike trails are somewhat limited but provide good scenic outing for any family.
Kal Haven Trail
The most popular place Rock 'n' Road Cycle of South Haven's rental bikes go. A packed limestone trail from South Haven to Kalamazoo, 33.5 miles.
T.K. Lawless
From dirtworld.com,
This is the ultimate weekend warrior trail. When you think of mountain biking in Michigan this is as good as it gets. Very tight and technical with lots of fun stuff to keep your attention. Don't miss the Teeter Totter, it's an added bonus. This trail is very compact and fun to ride. If you are advanced you can hit the trail at speed and it will challenge the hardest core of riders. Constant elevation change and some great drop ins and whoops. This trail is tucked away and is never very busy. Loads of fun for the whole family - as long as their good bikers!
Yankee Springs
Located in Middleville, Michigan this recreation area is a close second in many local rider's favorites. This area provides action packed trails for a variety of experience levels.