State Route 78 is a significant highway located in the state of California. It stretches approximately 90 miles, connecting the coastal city of Oceanside to the inland region of Brawley. This route serves as a vital link for both local and regional traffic, facilitating travel between urban and rural areas. The highway passes through diverse landscapes, including desert regions and mountain areas, offering scenic views along the way. It intersects with several major roads, enhancing accessibility to various communities and attractions, such as Anza-Borrego Desert State Park.