California State Route 128 is a scenic highway located in northern California. It stretches approximately 124 miles, connecting the coastal town of Mendocino to Napa Valley. The route offers stunning views of vineyards, forests, and the Russian River. The highway is known for its winding roads and picturesque landscapes, making it a popular choice for travelers and tourists. Along the way, drivers can explore charming towns like Boonville and Napa, as well as enjoy outdoor activities in nearby parks and wineries.