At a Glance
The A Line opened on April 22, 2016 and was RTD’s first commuter rail line. The 23-mile rail line travels between Denver’s Union Station and Denver International Airport (DEN).
Stations
Type: Electric commuter rail
Length: 23 miles
Stations: 8
Park-n-Rides: 6
Parking: 4,329 spaces (8,700 total planned)
Updated October 2023