There is a flat doubletrack trail for about 12 miles out-and-back. Some throught the woods next to a creek and some next to Red Bluff road. There are restrooms half way along next to a boat ramp, restraints and stores in the area. Hotels are nearby. There are also easy mountain bike trails next to the creek.
Hyw 225 east to Red Bluff rd, then turn right on Fairmont. U-turn at the first light and the parking lot is on the right.
http://www.singletracks.com/item.php?c=1&i=2920