The Niles Subdivision is a

Union Pacific The Union Pacific Railroad is a Class I freight-hauling railroad that operates 8,300 locomotives over routes in 23 U.S. states west of Chicago and New Orleans. Union Pacific is the second largest railroad in the United States after BNSF, ...

railway line in Northern California that runs from

Oakland, California Oakland is a city in the East Bay region of the San Francisco Bay Area in the U.S. state of California. It is the county seat and most populous city in Alameda County, California, Alameda County, with a population of 440,646 in 2020. A major We ...

Newark, California Newark ( ) is a city in Alameda County, California, United States. It was incorporated as a city in September 1955. Newark is an enclave, surrounded by the city of Fremont. The three cities of Newark, Fremont, and Union City make up the Tri-C ...

in the

East Bay The East Bay is the eastern region of the San Francisco Bay Area and includes cities along the eastern shores of San Francisco Bay and San Pablo Bay. The region has grown to include inland communities in Alameda and Contra Costa counties. Wi ...

Route

The line largely consists of the original Western Pacific East Bay main line between Oakland and Niles. The line between Newark and Fremont was originally laid out by the

South Pacific Coast Railroad The South Pacific Coast Railroad (SPC) was a Narrow-gauge railway, narrow gauge steam railroad running between Santa Cruz, California, and Alameda, California, Alameda, with a ferry connection in Alameda to San Francisco, California, San Franci ...

. The line features a

street running A street running train is a train which runs on a track built on public streets. The rails are embedded in the roadway, and the train shares the street with other users, such as pedestrians, cars and cyclists, thus often being referred to as ru ...

section along Embarcadero in Oakland.

Traffic

Freight movements are consolidated with the parallel

Oakland Subdivision The Oakland Subdivision is a Union Pacific Railroad line in the U.S. state of California. It extends from Stockton in the east to Oakland, crossing the Diablo Range at Altamont Pass and traversing Niles Canyon. The line was originally built by ...

. the line saw 17 freight trains daily. The Niles Subdivision also hosts several passenger trains.

Amtrak The National Railroad Passenger Corporation, Trade name, doing business as Amtrak (; ), is the national Passenger train, passenger railroad company of the United States. It operates intercity rail service in 46 of the 48 contiguous United Stat ...

operates the ''

Coast Starlight The ''Coast Starlight'' is a Amtrak Long Distance, long-distance passenger train operated by Amtrak on the West Coast of the United States between Seattle and Los Angeles via Portland, Oregon, Portland and the San Francisco Bay Area. The train, ...

'' and ''

Capitol Corridor The ''Capitol Corridor'' is a passenger train route in Northern California operated by Amtrak between San Jose, California, San Jose, in the Bay Area, and Auburn, California, Auburn, in the Sacramento Valley. The route is named after the two ...

'' along the route, and the ''

San Joaquins The ''San Joaquins'' is a state-supported passenger train service operated by Amtrak in California's San Joaquin Valley. As of 2025, the service operates seven daily round trips between its southern terminus at Bakersfield and Stockton. Of the ...

'' terminates at the northern segment of the line. The

Altamont Corridor Express The Altamont Corridor Express (ACE) 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 R ...

runs over the southern segment between Newark and Fremont. Fourteen daily passenger trains run over the line.

References

{{commons category Rail lines in California Southern Pacific Railroad lines Union Pacific Railroad lines