I was looking through the Google for Off Road Parks and found Central Missouri Orr-Road Park (CMORP). I haven't heard much about it and recall a few members going. From the pictures it looks like a lot of MUD. How are the trails and camping sites?
I've been there several times. Camping is primitive. Trails are good for beginners and some moderate stuff. There are few obstacle courses. And yes there is mud and a few firing ranges
CMORP is only open about 4 or 5 weekends a year. I was there in Feb and the conditions were a sloppy mess by the end of the day. A couple of main loop easy roads were definitely impassable for stock rigs. When conditions are dry as Sammy said there are not many challenges. Owner seems to realize lack of harder trails and is trying to develop some new stuff. The park adjoins the Central Missouri Machine gun Factory and they provide opportunity to shoot various rifles during event weekends.