Interstate 101, also known as U.S. Route 101, is a major highway that runs along the western coast of the United States. It stretches from Los Angeles, California in the south to Olympia, Washington in the north, covering approximately 1,500 miles. The route passes through several key cities, including San Francisco and Portland, and offers scenic views of the Pacific Ocean. The highway is an important transportation corridor, facilitating travel and commerce between states. It connects various regions, including California's coastal areas, Oregon's lush landscapes, and Washington's urban centers. Interstate 101 is also known for its diverse ecosystems and attractions, making it a popular route for tourists.