Very technical trail. 5 miles one-way. Trail is singletrack througout, that winds along Broken Bow reservoir in and out of coves and ravines. There is a lot of up and down. Typical rocky Ouachita Mountains terrain. The south end of the trail has a very steep section that can't be ridden up (or probably down too) by most people. Once on top though, there is an excellent scenic view of Broken Bow Lake. The signs at the trailhead says that mountain biking is allowed, but trail is not listed on the Beavers Bend Trail Guide, and it is listed as a hiking trail on the Beavers Bend Resort Park map. The latter only provides a simple sketch of the trail. There are plenty of campling and recreation options around this area. No fee either.
From HWY 259, go east on HWY 259A just south of Hochatown, OK. After about 3 miles, and just before you get to the spillway of Broken Bow Lake dam, there is a trailhead on the north side of the road. You can also access the trail from the road (I don't know the name) heading into the Stephens Gap Area. The other end of the trail starts at the Carson Creek Area (the north end of the trail), north of Hochatown.
http://www.singletracks.com/item.php?c=1&i=1151