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.
Missouri Route 101
Route 101 is a short highway in southern Missouri. The route starts at Arkansas Highway 101 at the Arkansas–Missouri state line, and travels northeastward. It travels through the city of Bakersfield, intersecting Route 142. The road then continues north to its northern terminus at U.S. Route 160 (US 160) in Caulfield. The route was designated in 1941, after a supplementary route was renumbered.