Across the High Plains. An inbound A Line train is seen racing across the high plains after departing Denver Airport station.

Across the Mountains. A Union Station-bound A Line train is seen on the high plains near Tower Rd and E 71st Ave as it begins its journey from Denver Airport.

Electric Infrastructure. An inbound RTD A Line train is seen from the Park Ave W overpass as it nears its final station: Union Station. The train is passing what appears to be a substati... (more)

Steam, Diesel, and Electric. Union Pacific 4014 spent Labor Day 2021 on display with UP 1989, the Rio Grande heritage unit, at the railroad's Denver Yard; the last stop on the Big Boy's ... (more)

On the rainy night of November 6, 2019, a RTD (Regional Transportation District) commuter train loads passengers on Track 1 at Denver Union Station for a trip on the A Line to Denver International... (more)

A RTD A Line electric commuter train to the airport has just met an inbound train just outside Denver Union Station in a view from the 22nd Street overpass in Denver, Colorado, on June 4, 2016. Th... (more)

RTD - Regional Transportation District - unit of Denver commuter rail network, Hyundai Eagle P3 No.4060, departure from Blake Station, while continuing operations of Union Pacific at 36th Street Y... (more)

Train time at Denver Union Station
A RTD A Line commuter train is about to depart for the airport, as Amtrak’s westbound California Zephyr makes its morning station stop at Denver, Co... (more)

During a cold autumn rain in Denver, Colorado, on the evening of November 7, 2017, an A Line RTD commuter train from the airport arrives at Denver Union Station.

As another late autumn night begins, a RTD A Line train to the airport is about to depart Denver Union Station under its unique trainshed in Denver, Colorado, on November 7, 2017.