Cal State San Marcos is an elevated station in San Marcos, California commenced in 2005. It is the only elevated station along the North County Transit District's SPRINTER light rail line. The station serves the California State University, San Marcos campus, which is located southwest of the station. It is situated on an entirely new alignment of the San Diego Northern Railway's Escondido Branch that crosses over State Route 78 to serve the campus. On campus days, shuttle services are available to ferry students from the train station to the heart of the CSUSM campus and back.