Dirtopia is a trail wiki site it is updated by users and is very helpful in getting you to the trails, check it out there are a few listed in North Carolina and depending on your location you can check the surrounding states for even more places. I am a Dirtopia member and regularly update trails to help people get out and get wheelin'.
http://dirtopia.com/wiki/Main_Pagehttp://dirtopia.com/wiki/North_Carolina