N Line (RTD)

N Line
Northbound N Line train at Commerce City/72nd station
Overview
OwnerRegional Transportation District
LocaleDenver metropolitan area
Termini
Stations7
9 (proposed)
WebsiteMetro North Rail Line
Service
TypeCommuter rail
SystemRTD Rail
Operator(s)Regional Transportation District
Ridership1,153,000 (FY2023, annual)
History
OpenedSeptember 21, 2020 (2020-09-21)
Technical
Line length13 mi (21 km)
18.5 mi (29.8 km) (proposed)
Track gauge4 ft 8+12 in (1,435 mm) standard gauge
ElectrificationOverhead line, 25 kV 60 Hz AC
Operating speed79 mph (127 km/h) (top)
Route map

N Line highlighted in purple
proposed extension
proposed extension
North Thornton/Hwy 7
York/144th
Eastlake/124th
Northglenn/112th
Thornton Crossroads/104th
Original Thornton/88th
SH 224
74th Avenue
Commerce City/72nd
Skyway Bridge
48th & Brighton/
National Western Center
Union Station

The N Line, also known as the North Metro Rail Line during construction, is a commuter rail line which is part of the commuter and light rail system owned by the Regional Transportation District (RTD) in the Denver metropolitan area in Colorado. The first 13 miles (21 km) from downtown Denver to 124th Avenue in Thornton opened as part of the FasTracks expansion plan on September 21, 2020. When fully built out, the line will be 18.5 miles (29.8 km) long and pass through Denver, Commerce City, Northglenn, and Thornton. The N Line features Colorado's longest bridge at 9,533 feet (1.8 mi; 2.9 km) called the Skyway Bridge. While other RTD commuter lines are operated by Denver Transit Partners for RTD, this is the only line operated by RTD itself.