The California Zephyr #6 train departs Denver around 7:00 pm, in time to get a golden Colorado sunset shot as it heads towards Keenesburg, Colorado.

After leaving Denver the California Zephyr travels east on the Brush Sub and will briefly stop at Fort Morgan before continuing to Nebraska.

An orange sunrise catches the California Zephyr as it runs towards Denver, Colorado.

A dynamic and colorful summer sunrise bathes the California Zephyr in golden light as it heads towards Denver, Colorado.

The California Zephyr passes through fog at Keenesburg at dawn.

BNSF 6100 (ES44AC) leans into the elevated curve at Keenesburg, Colorado.

BNSF 5901 (ES44AC) leads an empty coal train through the Keenesburg Cut as it runs east on the Brush Sub.

Sometimes the timing all comes together. The California Zephyr was just a little late arriving at Keenesburg, Colorado, which allowed the fog to roll in and the bright orange sun to elevate just h... (more)

BNSF 7322 (ES44DC) leads a stack train into the Keenesburg Cut and it heads east on the Joint Line.

An orange Colorado Sunrise catches the California Zephyr as it heads towards Keenesburg, Colorado.

The early bird catches the BNSF ACe at Keenesburg, Colorado.

The California Zephyr #5 train runs through Keenesburg, Colorado at dawn.

BNSF 6100 (ES44AC) leads a load of oil cans towards Keenesburg, Colorado. Snow from the night before has frosted the tank cars and blanketed the Colorado Front Range.

Morning's first light catches BNSF 8473 (SD70ACe) shoving a loaded coal through Keenesburg, Colorado.

BNSF 6231 (ES44AC) leads a loaded coal train into Keenesburg, Colorado in freezing temperatures, passing through the freshly fallen snow from the previous night's storm