The Blue Line is a 26.3-mile (42.3 km) light rail line in the San Diego Trolley system, operated by San Diego Trolley, Inc., an operating division of the San Diego Metropolitan Transit System (MTS). With an end-to-end travel time of one hour and twenty-three minutes, it operates between UTC Transit Center and San Ysidro Transit Center, the latter of which is at the Mexico–United States border directly adjacent to the San Ysidro Port of Entry, facilitating easy connections across the border. The line serves La Jolla, downtown San Diego, National City, Chula Vista, and San Ysidro and is the system's longest line.
Middletown station is an at-grade station on the Blue Line and Green Line of the San Diego Trolley system. It is located along the Surf Line right of way at West Palm Street, in the Middletown neighborhood of San Diego, which includes a variety of medium-density housing within blocks of the station. The station offers a connection to San Diego International Airport via a shuttle stop one block away from this station.
County Center/Little Italy station is an at-grade station on the Blue Line and Green Line of the San Diego Trolley system. It is located along the Surf Line right of way between West Beech Street and West Cedar Street, in the Little Italy neighborhood of downtown San Diego. The area has a variety of medium and high-density housing, and is also the site of the County Center, the location of many buildings for the government of San Diego County.
Fifth Avenue station is a station of the Orange Line, Blue Line, and Silver Line on the San Diego Trolley. It is located in the Core district of downtown San Diego, California. The station is located along on C Street, between Sixth Avenue and its namesake Fifth Avenue, surrounded by several office buildings.
12th & Imperial Transit Center is a San Diego Trolley station in downtown San Diego, California. It is located in the East Village neighborhood of the city and serves the high-density residential developments that surround the stop. It is one of two stations from which Petco Park can be reached. The station has historically been used as a major transfer point between the various Trolley lines and is the only station that is directly served by all four Trolley lines.
Barrio Logan station is a station on the Blue Line of the San Diego Trolley located in the Logan Heights neighborhood of San Diego. The station's name is the Spanish translation of "Logan neighborhood" and the station primarily serves the corresponding Hispanic neighborhood. The stop is located near Chicano Park, famous for its artwork and legacy of protests for minority rights.
Harborside station is a station on the Blue Line of the San Diego Trolley located in the Logan Heights neighborhood of San Diego. It serves the Logan Heights residential neighborhood as well as a nearby industrial area.
Pacific Fleet station is a station on the Blue Line of the San Diego Trolley near Naval Base San Diego in San Diego, California. The stop provides civilian access to the naval base facility.
8th Street station is a station on the Blue Line of the San Diego Trolley located in National City, California. Surrounded by an industrial area, the primary focus of this station is to serve as a commuter lot, as it is easily accessible from Interstate 5.
24th Street station is a station on the Blue Line of the San Diego Trolley in National City, California. The stop serves both as a commuter center with a park and ride lot and to provide access to the dense nearby retail area.
E Street station is a station on the Blue Line of the San Diego Trolley in Chula Vista, California. The stop serves both as a commuter center with a park and ride lot and to provide access to the dense nearby retail area.
H Street station is a station on the Blue Line of the San Diego Trolley located in the city of Chula Vista, California. The stop serves both as a commuter center with a park and ride lot and as an access point to the nearby dense retail and large residential areas. It also provides access to nearby Southwestern Community College by way of the 709 bus.
Palomar Street Transit Center is a station on the Blue Line of the San Diego Trolley located in the city of Chula Vista, California. The stop serves a variety of purposes, holding the function of commuter center with a park and ride lot and providing access to the nearby commercial, industrial, and residential areas, as well as Southwestern Community College.
Iris Avenue Transit Center is a station on the Blue Line of the San Diego Trolley in the Otay Mesa West neighborhood of San Diego, California, United States. The stop serves a variety of purposes, holding the function of commuter center with a park and ride lot and to provide access to the nearby commercial and residential areas.
Gaslamp Quarter station is a station of the Green and Silver Lines on the San Diego Trolley. It is located in the Gaslamp Quarter section of the city and serves the surrounding trendy neighborhood. A variety of entertainment destinations and restaurants, as well as Petco Park, are accessible from the station.
Convention Center station is a station of the Green and Silver Lines on the San Diego Trolley. It is located in the Marina district section of the city, which features a variety of waterfront apartments just west of downtown. The San Diego Convention Center is located adjacent to the station, and Petco Park is less than half a mile away. This station opened June 30, 1990 as part of the Orange Line's Bayside Extension.
Seaport Village station is a station of the Green and Silver Lines on the San Diego Trolley in San Diego, California. It is located in the Marina district of the city. Seaport Village, a shopping and entertainment complex, is adjacent to the station. This station opened June 30, 1990 as part of the Orange Line's Bayside Extension.
25th & Commercial station is a station on the Orange Line of the San Diego Trolley located in the Grant Hill neighborhood of San Diego, California. The stop is dedicated to Hispanic civil rights leader Cesar Chavez.
Courthouse station is a light rail station in San Diego, California. It is the western terminus of the San Diego Trolley's Orange Line and is located between the Hall of Justice and San Diego Central Courthouse in downtown San Diego, on C Street between State and Union streets. The station opened on April 29, 2018, after nearly a year of construction.
MTS: 10 
