91/Perris Valley Line

91/Perris Valley Line
Pedestrian bridge and tracks at the Fullerton station
Overview
Locale	Southern California
Termini	L.A. Union Station Perris–South
Stations	12
Service
Type	Commuter rail
System	Metrolink
Operator	Metrolink
Daily ridership	2,605 (weekdays, Q3 2025)
History
Opened	May 2002 (2002-05)
Technical
Line length	83.8 miles (134.9 km)
Character	Elevated and surface-level
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Operating speed	33 mph (53 km/h) (avg. Q4 2015-16)
Route map 91/Perris Valley Line highlighted in blue AV to Lancaster VC to Ventura–East L.A. Union Station RIV to Riverside–Downtown SB to San Bernardino–Downtown Pico Rivera (proposed) Norwalk/Santa Fe Springs Buena Park Fullerton OC to Oceanside Placentia (planned) IEOC to Oceanside Corona–West Corona–North Main Riverside–La Sierra RIV Riverside–Downtown IEOC to San Bernardino–Downtown Riverside–Hunter Park/UCR Moreno Valley/March Field Mead Valley (planned) Perris–Downtown Perris–South Other line sharing track Multiple lines sharing track Stations with Amtrak service All stations are accessible

The 91/Perris Valley Line, formerly known as the 91 Line, is a commuter rail route operated by Metrolink that runs from Los Angeles to Perris in Southern California, United States, mostly paralleling State Route 91 between Riverside-Downtown and Buena Park stations. Operating since May 2002, the route runs on the Southern Transcon line owned by BNSF Railway, as well as the Riverside County Transportation Commission-owned San Jacinto Branch Line. Services are primarily operated along the entire route between L.A. Union Station and Perris–South.