Caltrain is a commuter rail line in California, serving the San Francisco Peninsula and Santa Clara Valley. The southern terminus is in San Jose at the Tamien station with weekday rush hour service running as far as Gilroy. The northern terminus of the line is in San Francisco at 4th and King Street. Caltrain has express, limited, and local services. There are 28 regular stops, one limited-service weekday-only stop, one weekend and holiday-only stop (Broadway), and one football-only stop (Stanford). While average weekday ridership in 2019 exceeded 63,000, impacts of the COVID-19 pandemic have been significant: in June 2024, Caltrain had an average weekday ridership of 24,580 passengers.
The Capitol Corridor is a 168-mile (270 km) passenger train route in Northern California operated by Amtrak between San Jose, in the Bay Area, and Auburn, in the Sacramento Valley. The route is named after the two points most trains operate between, San Jose and Sacramento. The route runs roughly parallel to I-880 and I-80. Some limited trips run between Oakland and San Jose. A single daily round trip runs between San Jose and Auburn, in the foothills of the Sierra Nevada. Capitol Corridor trains started in 1991.
Millbrae station is an intermodal transit station serving Bay Area Rapid Transit (BART) and Caltrain, located in Millbrae, California. The station is the terminal station for BART on the San Francisco Peninsula, served by two lines: The Red Line before 9 pm and the Yellow Line during the early morning and evening. It is served by all Caltrain services. The station is also served by SamTrans bus service, Commute.org and Caltrain shuttle buses, and other shuttles.
San Jose Diridon station is the central passenger rail depot for San Jose, California. It also serves as a major intermodal transit center for Santa Clara County and Silicon Valley. The station is named after former Santa Clara County Supervisor Rod Diridon Sr.
Palo Alto station is an intermodal transit center in Palo Alto, California. It is served by Caltrain regional rail service, SamTrans and Santa Clara VTA local bus service, Dumbarton Express regional bus service, the Stanford University Marguerite Shuttle, and several local shuttle services. Palo Alto is the second-busiest Caltrain station after San Francisco, averaging 7,764 weekday boardings by a 2018 count. The Caltrain station has two side platforms serving the two tracks of the Peninsula Subdivision and a nearby bus transfer plaza.
College Park station is a limited-service, weekday-only Caltrain station serving the College Park neighborhood and the Bellarmine College Preparatory school in San Jose, California.
South San Francisco station is a Caltrain station in South San Francisco, California. The station is on the east side of the Bayshore Freeway, east and south of the curved Grand Avenue overpass, and north of where the freeway crosses over the tracks. Downtown South San Francisco is to the west, across the freeway. It previously underwent a substantial modernization and expansion project, completed in January 2022.
San Bruno station is a Caltrain station located in San Bruno, California. The station is located just northeast of downtown San Bruno, above the intersection of San Mateo and San Bruno Avenues, adjacent to Artichoke Joe's Casino.
Broadway station is a Caltrain station in Burlingame, California. Caltrain only serves the stop on weekends and holidays; weekday service is provided by a bus shuttle to nearby Millbrae station.
San Mateo station is the northernmost of the three Caltrain stations in San Mateo, California. It is in downtown San Mateo.
Hayward Park station is one of three Caltrain stations in San Mateo, California. It is located just to the north of the State Route 92 overcrossing, about 1,200 ft (370 m) south of the site of the original Southern Pacific station in Hayward Park. It was relocated in 1999 because of a lack of parking at the original site, and because the previous station had been sited along a curve in the tracks near 16th Avenue. The present station has two side platforms, with at-grade signalized and gate-protected pedestrian/bicycle crossings of the tracks at both its north and south ends.
Gilroy station is a Caltrain station located in Gilroy, California, United States. It is the southern terminus of the South County Connector service, and is only served during weekday rush hours in the peak direction, with trains going toward San Jose in the morning and returning southbound in the evening. The station building was constructed by the Southern Pacific Railroad in 1918 and restored in 1998. Future plans call for extended Amtrak Capitol Corridor service, as well as California High-Speed Rail trains, to also stop at Gilroy. The station was named to the National Register of Historic Places in 2019 as Gilroy Southern Pacific Railroad Depot.
Atherton station was a Caltrain station in Atherton, California. The station had one side platform and one island platform serving the two tracks of the Peninsula Subdivision, with a concrete and wooden shelter on the west side of the tracks. The station opened by the Southern Pacific Railroad in 1866 as Fair Oaks and was renamed Atherton in 1912. Caltrain cut weekday service to the station in 2005 due to low ridership and a hold-out rule that prohibited two trains from being at the station simultaneously. Weekend and holiday service continued until December 19, 2020.
Paul Avenue station was a Caltrain station located in the Bayview neighborhood of San Francisco, California. The lightly used station was closed on August 1, 2005, and the platform and shelter were removed in 2009. A replacement station to the north has been proposed.
Capitol station is a Caltrain station located off Monterey Road near the Capitol Expressway, after which the station is named, in southern San Jose, California. The station is only served during weekday peak hours, with northbound trains in the morning and southbound trains in the evening. Service between San Jose and Gilroy, including Capitol station, was increased to four weekday round trips on September 25, 2023.
Morgan Hill station is a Caltrain station located in the downtown area of Morgan Hill, California. The station is only served during weekday peak hours, with northbound trains in the morning and southbound trains in the evening.
San Martin station is a Caltrain station located in the downtown area of San Martin, California. The station is only served by South County Connector service during weekday peak hours, with four northbound trains to San Jose in the morning and four southbound trains to Gilroy in the evening.
The Caltrain Express (CTX) project was implemented from 2002 to 2004 to establish the Baby Bullet express service, which shortened the transit time on the Caltrain commuter rail line between San Francisco and San Jose, and certain stations in between. New locomotives and rolling stock were purchased for dedicated express service, bypassing most stations; quad-track overtake sections were added in two locations along the Peninsula Corridor right-of-way to allow express trains to pass slower local trains that were making all stops; tracks were also upgraded with continuous-welded rail; a centralized traffic control system was added; and crossovers were added every few miles to allow single-tracking trains around disabled trains. Congresswoman Jackie Speier, then serving as a California State Senator, is credited with securing the funding for CTX and one of the new locomotives acquired for the project is named for her as a result. During commute hours, the Baby Bullet went up to 20 percent faster than driving south from San Francisco to San Jose. On September 21, 2024, with the completion of the Caltrain modernization project and the transition to electrified trains, the Baby Bullet was renamed as simply the Express service.
The Monterey County Rail Extension is a planned commuter rail extension that would bring Caltrain passenger service south of its existing Gilroy, California terminus to Salinas in Monterey County, using the existing Coast Line owned by Union Pacific (UPRR). Implementation of the rail extension will occur over three phases, starting from Salinas and moving north. When construction is complete, there will be four trains operated over the extended line per weekday: two northbound trains that depart from Salinas and travel to San Francisco in the morning, and two southbound trains that return to Salinas in the afternoon.
VTA: Rapid 568 
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