Ouachita National Recreation Trail is a 223-mile (359 km) long, continuous hiking trail through the Ouachita Mountains of Oklahoma and Arkansas. It is the longest backpacking trail in the Ouachita National Forest, spanning 192 miles across its length. Approximately 177 miles of the trail is in Arkansas and 46 miles of the trail is in Oklahoma. The trail is used by hikers, backpackers, hunters, and mountain bikers. It is a non-motorized single track trail open only to foot traffic and partially open to mountain bicycles. Segments opened to mountain bikes are from the western terminus of the Ouachita Trail at Talimena State Park to the Big Cedar trailhead on US Highway 259 at approximately Mile Marker (MM) 30.5 in Oklahoma, and from the Talimena Scenic Drive Trailhead at MM 54.1, east to Highway 7 at mile 160.4, north of Jessieville, Arkansas.
The trail's western end is at Talimena State Park in southeastern Oklahoma, and the eastern end is at Pinnacle Mountain State Park in the small community of Natural Steps, Arkansas in central Arkansas. The first 192 miles (309 km) lie within the Ouachita National Forest; the remaining 31 miles (50 km), maintained by Pinnacle Mountain State Park, traverse lands owned by timber companies and Central Arkansas Water. (Plans for the Arkansas River Trail include an extension connecting the eastern terminus of the Ouachita Trail to downtown Little Rock 17 miles (27 km) away.) The trail passes through parts of eight counties in Arkansas and one in Oklahoma. From east to west they are Pulaski, Perry, Saline, Garland, Montgomery, Yell, Scott, and Polk, in Arkansas, and Le Flore County in Oklahoma, where the trail ends. At several locations the trails switches back between two counties. Scott County actually has very little of the trail, with a couple of small corners of the county traversed.
There are two federally designated wilderness areas that the Ouachita Trail passes through: the Flatside Wilderness Area in Perry and Saline Counties in Arkansas and the Upper Kiamichi River Wilderness Area in Le Flore County, Oklahoma.