BNSF 6195 (ES44AC) leads a freight through the turns in Louisville, Colorado.

There is a nice variety of UP heavy and light power waiting for action in the UP's North Yard in Denver, Colorado.

UP 1624 (SD40N) struggles to pull a long cut of cars out of the UP North Yard for sorting.

The snow helps bounce the last minutes of sun off of UP 6701 (AC4400CW) as it waits for the green signal to head into Palmer Lake, Colorado.

This morning's sunrise was extra amazing, providing the fiery and colorful backdrop to RTD's commuter rail train that was heading from Denver to Westminster, Colorado.

It is a busy day in the BNSF's North Yard in Fort Collins, Colorado as 4515 (Dash 9) leads an oil can train, which will turn north and head to Wyoming.

BNSF 6567 (ES44C4) runs through Westminster, Colorado on its way to Denver.

BNSF 6567 (ES44C4) holds at the Broomfield siding under Wadsworth Boulevard to allow a northbound container train to pass. Soon it will get the green signal to lead its five other engines and a l... (more)

A pair of Executive MAC's run light as they cross the Cache la Poudre River in Fort Collins, Colorado. They will lash up to a small freight in the BNSF's North Yard and then head back to Longmont... (more)

UP 6701 (AC4400CW) leads a freight along the ridgeline towards The Sag, a place just north of Palmer Lake where southbound trains can wait for the go signal to take the single track through Palmer... (more)

BNSF 6725 (ES44C4) passes the historic Longmont Depot and crosses Main Street as it works its way through Longmont, Colorado. The depot was built in 1898 by the Colorado and Southern Railroad and... (more)

Southbound BNSF 6195 (ES44AC) meets a northbound freight and pulls onto the Broomfield siding so that the northbound train can then head to Boulder.

After passing through Boulder, Colorado, BNSF 6195 (ES44AC) pulls onto the Broomfield siding and will run up the hill to the Utah Junction so that a northbound freight can then head to Boulder.

BNSF 5954 (ES44AC) has stopped its load of coal in The Sag, an area north of Palmer Lake, to allow a southbound empty coal train to pass through the town. There is only one line that runs throug... (more)

A fresh layer of snow has fallen across the Colorado Front Range, making for this scenic winter wonderland for BNSF 6195 (ES44AC). It leads a legit Warbonnet (note it says Santa Fe and not BNSF o... (more)