There's Bienville National Forest in Forest, it's about, say, 50 miles west of Meridian, about 20 west where I am. They claim to have some good logging roads. We were told as long as it isn't gated up and locked, you could ride on it. We bought a map from there, it has the whole forest on it with all the roads. We (me and my wife + her parents) are getting ready to go on a ride out there. There's Marathon Lake in Smith County, it has a lot of good roads around it. And there is Roosevelt State Park in Morton. Located about 15(ish) miles west of Forest. That's really about it. We generally just ride dirt and county roads, and some creek landing roads that aren't technically 'roads', but trails I guess. We should meet up and ride sometime.