The United States is known for its epic road trips, and the Pacific Coast Highway is arguably one of the country's greatest. Highway 1 stretches 655 miles from San Diego to San Francisco and can take as little as a couple days to several weeks to drive depending on how many stops you make. We recommend paddle boarding in San Diego, walking the famous Santa Monica Pier, peeping Monterey's gorgeous Point Lobos State Natural Reserve, and dipping into some hot springs in Big Sur.