U.S. Route 101
The nearly highway's northern terminus is in Tumwater, Washington: the route remains along the Olympic Peninsula's coastal perimeter west, north, and east; the northernmost point on the highway is in Port Angeles. The southern terminus of US 101 is in Los Angeles at the East Los Angeles Interchange, the world's busiest freeway interchange.
Oklahoma State Highway 101
Another gradual curve returns SH-101 to an east–west alignment which persists until the junction with State Highway 64B near Eagle Mountain. This is the northern terminus of the highway, which heads south to Muldrow and eventually to Interstate 40. SH-101 continues north from this point, curving around the mountain and proceeding along a very winding route. During this section, the road crosses Polecat Creek and Little Lee Creek. After a short southeast section, SH-101 turns to a due east alignment, crossing Big Lee Creek on a narrow through truss bridge and passing just north of the unincorporated CDP of Short. The highway then gradually stairsteps northeast, culminating in a brief north–south section along the Oklahoma–Arkansas state line. The roadbed then curves east, entering Arkansas and the Ozark National Forest, and becoming Highway 220 toward Uniontown.