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Altamont Corridor Express, or ACE, is a commuter rail service in California's San Joaquin, Alameda, and Santa Clara counties. As of 2022 [update] , the service has ten stations. [1] Additional stations, most in the Central Valley, are planned as part of several expansion projects
 | Terminals |
 | Transfer stations with other rail systems |
| Transfer stations with other rail systems/Line termini |
| Station [2] | Image | Location | Service began | Connections |
|---|---|---|---|---|
| Stockton (Robert J. Cabral) |  | Stockton | October 19, 1998 |  Amtrak: San Joaquins  Amtrak Thruway, San Joaquin RTD |
| Lathrop/Manteca |  | Lathrop | October 19, 1998 | StanRTA |
| Tracy |  | Tracy | October 19, 1998 | Tracer |
| Vasco Road |  | Livermore | October 19, 1998 | WHEELS |
| Livermore |  | Livermore | October 19, 1998 | Amtrak Thruway, WHEELS |
| Pleasanton |  | Pleasanton | October 19, 1998 | WHEELS |
| Fremont |  | Fremont | October 19, 1998 | Amtrak: Capitol Corridor AC Transit |
| Great America |  | Santa Clara | October 19, 1998 | Amtrak: Capitol Corridor VTA light rail (at Lick Mill station): Green Line, Orange Line VTA Bus |
| Santa Clara |  | Santa Clara | 2001 [lower-alpha 1] |  Caltrain Amtrak: Capitol Corridor: VTA Bus |
| San Jose Diridon |  | San Jose | October 19, 1998 | Caltrain Amtrak: Coast Starlight , Capitol Corridor VTA light rail: Green Line Amtrak Thruway, Greyhound, Highway 17 Express, Megabus, VTA Bus |
| Station | Location | Planned opening | Connections |
|---|---|---|---|
| Natomas/Sacramento Airport | Sacramento | 2026 |  Sacramento International Airport (via bus connection) Amtrak: San Joaquins (planned) [3] |
| Old North Sacramento | Sacramento | 2029 | Amtrak: San Joaquins (planned) [3]  Sacramento RT Light Rail (at Globe station): Blue Line RT bus |
| Midtown Sacramento | Sacramento | 2026 | Amtrak: San Joaquins (planned) [3] Sacramento RT Light Rail (at 16th Street station): Blue Line, Gold Line RT bus |
| Sacramento City College | Sacramento | 2029 | Amtrak: San Joaquins (planned) [3] Sacramento RT Light Rail: Blue Line RT bus |
| Elk Grove (proposed) | Elk Grove | 2026 | Amtrak: San Joaquins (planned) E-tran |
| Lodi | Lodi | 2027 | Amtrak: San Joaquins (planned) [3] |
| North Lathrop | Lathrop | 2027 | Valley Link (planned for 2028) |
| Manteca | Manteca | 2026 | Manteca Transit, StanRTA |
| Ripon | Ripon | 2027 | StanRTA |
| Modesto | Modesto | 2026 | Greyhound, StanRTA |
| Ceres | Ceres | 2026 | StanRTA |
| Turlock | Turlock | 2029 | Turlock Transit, StanRTA |
| Livingston | Livingston | 2030 | |
| Atwater (optional) | Atwater | ||
| Merced | Merced | 2030 |  California High-Speed Rail (planned for late 2020s) Merced County Transit |
The Altamont Corridor Express is a commuter rail service in California, connecting Stockton and San Jose during peak hours only. ACE is named for the Altamont Pass, through which it runs. Service is managed by the San Joaquin Regional Rail Commission, and operations are contracted to Herzog Transit Services. The 86-mile (138 km) route includes ten stops, with travel time about 2 hours and 12 minutes end-to-end. In 2022, the line had a ridership of 389,100, or about 8,800 per weekday as of the fourth quarter of 2022. ACE uses Bombardier BiLevel Coaches, MPI F40PH-3C locomotives, and Siemens Charger locomotives.
Santa Clara Transit Center is a railway station in downtown Santa Clara, California. It is served by Caltrain, Amtrak Capitol Corridor, and Altamont Corridor Express (ACE) trains. It is the planned terminus for the Silicon Valley BART extension into Santa Clara County. The former station building, constructed in 1863 by the San Francisco and San Jose Railroad, is used by the Edward Peterman Museum of Railroad History.
City College station is an at-grade light rail station on the Blue Line of the Sacramento RT Light Rail system operated by the Sacramento Regional Transit District. The station is located in an exclusive right-of-way alongside the Union Pacific Railroad's Sacramento Subdivision and a small rail yard, on the campus of Sacramento City College, after which the station is named, in the city of Sacramento, California.
Fremont station is a train station located in the Centerville area of Fremont, California, United States. The station is served by Amtrak Capitol Corridor commuter rail/intercity rail service and the Altamont Corridor Express (ACE) commuter rail service.
Robert J. Cabral Station, is a railway station in Stockton, California. In 2003, the station building was named in honor of the late Robert J. Cabral, a San Joaquin County supervisor instrumental in the creation of the Altamont Corridor Express (ACE), originally Altamont Commuter Express.
Modesto station is a staffed Amtrak station in Modesto, California. It serves the on the San Joaquin line. Designed by Pacific Design Associates of Modesto and VBN Architects of Oakland, the $2.4 million depot was built on four acres of former dairy pastureland. The station has one platform which serves a single track.
The Modesto Transportation Center is a bus terminal and former train station located in downtown Modesto, California.
Merced station is a proposed California High-Speed Rail station in Merced, California, located in Downtown Merced. The environmentally approved site is on Martin Luther King Jr. Way near the interchange with Route 99/59, placing it about 7 blocks south from the existing Merced Amtrak station. The station was initially intended to be the northern terminus of the system's Initial Construction Segment. As of April 2022 the California High-Speed Rail Authority is studying an alternative location proposed by the City of Merced and other stakeholders, 8 blocks to the west-northwest along 15th Street, between O Street and R Street. The high-speed rail line will run on the south side of the Union Pacific Railroad right-of-way at these locations.
The Tri-Valley-San Joaquin Valley Regional Rail Authority is a special-purpose district body formed for the sole purpose of providing a public transit connection, known as Valley Link, between broad-gauge Bay Area Rapid Transit (BART) and standard-gauge Altamont Corridor Express (ACE) services, in Northern California.
Ceres station is a future Altamont Corridor Express rail station in the city of the same name. It was expected to open to revenue service in 2024 as the terminus of the first phase of ACE's expansion to Merced, but the opening was later pushed back to 2026. The station is located between Railroad Avenue and CA 99 near the southbound Whitmore Avenue exit underpass; the platform is only accessible approaching from the east side of the tracks. A bus will connect to Merced at first, with rail service to follow in the future. Parking will be available on nearby surface streets.
Midtown Sacramento is a planned train station in the neighborhood of the same name that will be a stop on Altamont Corridor Express and Amtrak California's San Joaquin services. To be constructed as part of the Valley Rail project, it was expected to open no later than 2023. By 2023, the opening date had slipped to 2026. The platform will run between P Street and the wye at S Street and be bisected by Q Street. Sacramento RT Light Rail stations are located either three blocks to the east or west.
The Manteca Transit Center is the primary public transit hub of Manteca, California. The bus station features five bus bays with Manteca Transit as the primary operator; the agency also maintain their offices at the facility. San Joaquin Regional Transit District and Altamont Corridor Express shuttle routes also serve the transit center. Modesto Area Express service began in July 2020. Altamont Corridor Express commuter rail service is expected to commence at a newly constructed platform along the Union Pacific rail line by 2026.
Ripon is a future Altamont Corridor Express station in the city of the same name. The platform will be located between the railway right of way and U.S. Highway 99, south of the Main Street interchange. Access to the platform will be via a pedestrian overcrossing southwest over the tracks to South Industrial Avenue. It was expected to open to revenue service in 2024 as a station along the first phase of ACE's expansion to Merced, but was later delayed to 2027.
North Lathrop station is a planned Altamont Corridor Express station in Lathrop, California – the second to be constructed in the city. It was expected to open to revenue service in 2023 as part of the first phase of ACE's expansion to Merced, but was later delayed to 2027.
Southfront Road is a planned railway station in Livermore, California. It is a stop on the planned Valley Link system. Rush hour short turn Valley Link trains would operate from here to Dublin/Pleasanton. Service is expected to start as early as 2028.
Old North Sacramento is a planned train station that will be a stop on Altamont Corridor Express and Amtrak California's San Joaquin services. The station is located near the intersection of El Monte Avenue and Acoma Street. To be constructed as part of the Valley Rail project, it is expected to open by 2029. The Sacramento RT Light Rail Globe station is located nearby to the east.
Natomas/Sacramento Airport is a planned train station that will be a stop on Altamont Corridor Express and Amtrak California's San Joaquin services. The station site is in the Natomas area, north of Sacramento, east of Blacktop Road and immediately south of West Elkhorn Boulevard. Planned as the northern terminus of the Valley Rail project, it was expected to open no later than 2023. By 2023, then opening date had slipped to 2026. A shuttle bus will provide connectivity for those traveling between the station and Sacramento International Airport, 8 miles (13 km) to the east.
Turlock station is a future Altamont Corridor Express station in the city of the same name. It is expected to open to revenue service in 2029 as part of the second phase of ACE's expansion to Merced. The station is located at the intersection of Golden State Boulevard and Front Street. The platform is planned to be connected to the Turlock Transit Roger K. Fall Transit Center via an elevated pedestrian bridge. The station is also adjacent to the city's Greyhound Lines bus stop.
Livingston station is a future Altamont Corridor Express station in Livingston, California. It is expected to open to revenue service in 2030 as part of the second phase of ACE's expansion to Merced. The station is located on Main Street. Turlock was selected over Atwater as a stop due to the distance between adjacent stations potentially resulting in fewer bottlenecks for freight trains.
