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.
Special routes of U.S. Route 101
U.S. Route 101 Alternate is an alternate route of U.S. Route 101 that bypasses the towns of Long Beach and Ilwaco in southwestern Washington.