California State Route 125, also known as SR 125, is a major north-south highway located in San Diego County. It spans approximately 17 miles, connecting the cities of La Mesa and Chula Vista. The route serves as a vital corridor for commuters and travelers, providing access to various neighborhoods and commercial areas. SR 125 is a toll road in certain sections, offering a faster alternative to local roads. It intersects with several key highways, including Interstate 8 and Interstate 805, enhancing connectivity within the region. The highway features scenic views of the surrounding landscape, making it a notable route for drivers.