The Metrolink Ventura County Line is a commuter rail line serving Ventura County and the San Fernando Valley in Los Angeles County and the City of Los Angeles, in the Southern California system. The line is the successor of the short lived CalTrain commuter rail line. Schedules Metrolink trains on the Ventura County Line ran weekdays only until Saturday service was added on May 29, 2021, mostly during peak commuter hours, and so with limited midday service. From Union Station to Downtown Los Angeles (): East Ventura six trains total at peak hours, in the peak direction only (3 south-AM; 3 north PM) each weekday, running to East Ventura station (in the community of Montalvo) — northern end of line. Moorpark four trains each weekday run to Moorpark Station (far western Simi Valley) — also station for Amtrak Pacific Surfliner. Trains of the six East Ventura runs also stop here. Chatsworth three trains each weekday run to Chatsworth Station (western San Fernando Valley) — major transit hub, with the Amtrak Pacific Surfliner, the Metro G Line and Metro Local valley bus lines, the LADOT Commuter Express service; and buses from Santa Clarita Transit, and Simi Valley Transit. Trains of the six East Ventura and four Moorpark runs also stop here. Airport All 17 trains per weekday from Union Station stop at Hollywood Burbank Airport (900 numbered series). All 16 trains en route to Union Station per weekday stop at Hollywood Burbank Airport. Only three trains per day originate in East Ventura. The remaining 13 trains originate from different points along the Ventura County Line. Other service Service is augmented during midday and on weekends by the Amtrak Pacific Surfliner line, serving most of the Metrolink stations on the Ventura County Line. Airport Additional airport shuttle service operates between Union Station and Burbank Airport–South station as the Hollywood Burbank Airport Line—BUR. Metrolink numbers Airport Line trains in the 900 series. Tracks The line operates between Moorpark and Los Angeles Union Station on tracks owned by the Los Angeles County Metropolitan Transportation Authority – the Ventura Subdivision from Moorpark to Burbank Airport and the Valley Subdivision, the Valley Subdivision from Burbank to Glendale, becoming the River Subdivision into Los Angeles Union Station. It uses the Coast Line of the Union Pacific Railroad between Moorpark and Oxnard and into Ventura where the Santa Paula Branch splits from the rest of the Coast Line.