Bundy Hill ORV park in Jerome, MI:
This is private and seems to have it all. Suuuuper close to me -- 1.5hrs. =)
Confirmed trails are plenty wide and suitable for Honda FL's.
http://www.bundyhilloffroad.com/visitorinformation.php" ."..


Gladwin, MI
Anyone ever been to the Gladwin ORV park in central Michigan? Some dirt, some rocks, some mud, some sand, buggies welcome, and it's only 3.5 hrs from my home base (Silver Lake is 4.5 hrs). Hmmm...
http://www.michigan.org/things-to-do/outdoors/off-road-vehicle/default.aspx?city=G3079


In the Buckeye State...
Bear Creek Amphitheatre in East Sparta, OH
26-mi of trails, hill climb
1,000' elevation
Fri, Sat, Sun: 8am-7pm (Apr-1 to Sep-30)
$15
UTVs welcome

Clear Fork Resort in Butler, OH
191-acres, 13-mi of trails
1100-1300' elevation
10am-dusk
$5 all day
UTV's welcome


(Adding more as I find them. Please feel free to add some!)

That bundy hill place looks FUN.

Looks pretty large on google maps satellite view.. any idea how many acres?