[Flint]

You might try Rush Offroad near Ashland, KY. With 7000 acres in the park you can stay on easy trails an entire day. You'll also have the advantage of being able to watch rigs try the extreme trails and not leave the comfort of the easy trail. Two caveats though... if you go in the rain some easy trails will have harder spots due to mud and ...if your idea of "offroad" is a gravel road you should disregard all the above and try another park.