There is a big ride in the works for the weekend of April 5,6,and 7th. Ride location is in Oliver Springs Tennessee at the Coal Creek / Windrock OHV area (CCMMC). This looks like it's building into a major event including guided tours of various lengths and paces with several in the 60 to 100 mile range, and an Iron Butt ride of 140+ miles in one day. There will be a bar-b-que pig roast on Saturday night with live band on site. Special events are planned for Sunday including, ATV Drag Races, Mud-Bog, Sled Pulls, Barrel Races, Tug-O-Wars and others. Open riding on mapped trails is available if you prefer to go at it on your own. Free primitive camping is also available on site. Windrock ATV Club is one of the sponsors with donations going to Thompson Cancer Survival Center.
WindrockATV.com has ride and pre-registration information. You can also follow ride info as it develops at this link Spring Ride. ATV Connection did a ride at Windrock/CCMMC about 3 years ago and wrote this article:Tennessee ATV Riding. Trails have been improved, mapped and added since that ride. Pre-registration and land use permits are required for this ride, so sign up early if you want to participate.