[1][2] Highway 8 begins at the Oklahoma state line as a continuation of OK-63 and runs east through the Ouachita National Forest towards US 59/US 71 west of downtown Mena, where it terminates.

[3] A concurrency forms with Highway 27 in Norman, and the two routes continue south past the historic Caddo Valley Academy Complex and the Norman Town Square to exit the Ouachita National Forest and enter Pike County.

After turning south to leave US 70, Highway 27 follows US 70 west, ending the concurrency that began in Norman.

The route begins at Carmel and runs south to Johnsville, before continuing east to US 65 in Eudora, where it terminates.

The route of 0.20 miles (0.32 km) runs from Highway 8 west to a lumberyard along the Arkansas Midland Railroad tracks.