Pacific Surfliner

The Pacific Surfliner is a 350-mile (560 km) passenger train service serving the communities on the coast of Southern California between San Diego and San Luis Obispo. The Pacific Surfliner is Amtrak's third-busiest service (exceeded in ridership only by the Northeast Regional and Acela), and the busiest outside the Northeast Corridor. Like all regional trains in California, the Pacific Surfliner is operated by a joint powers authority. The LOSSAN Rail Corridor Agency is governed by a board that includes eleven elected representatives from the six counties the train travels through. LOSSAN contracts with the Orange County Transportation Authority to provide day-to-day management of the service and with contracts with Amtrak to operate the service and maintain the rolling stock (locomotives and passenger cars). Caltrans provides the funding to operate the service and also owns all of the locomotives and some of the rolling stock; with Amtrak owning the rest. as of May 2026 the Pacific Surfliner operates thirteen daily round trips between Los Angeles and San Diego, six of which continue north of Los Angeles to Goleta or San Luis Obispo. Portions of the line in southern Orange County have been suspended five times between 2022, 2024, and 2026 due to coastal erosion.