State Route 29 is a significant highway located in the state of California. It runs through the scenic Napa Valley, connecting the cities of Napa and Calistoga. The route is known for its picturesque views of vineyards and rolling hills, making it a popular drive for both locals and tourists. The highway spans approximately 30 miles and serves as a vital transportation link for residents and visitors. Along the way, travelers can access various attractions, including wineries and parks, enhancing the overall experience of exploring the Napa Valley region.