It was never easy to build a railroad in Colorado. As the highest territory in the continental United States, Colorado was filled with an estimated 4,391 mountain peaks, deep river gorges, severe ...

Union Pacific’s (UP) Big Boy 4014, the world’s largest operating steam locomotive, will make two whistle-stops in Greeley, Colo., this summer as part of a limited summer excursion. Big Boy will be ...

The historic Georgetown Loop Railroad has many quirks to its classy passenger train experience, but the Christmas train ride brings the holiday joy of the North Pole to a tucked away Colorado mountain ...

DENVER (KDVR) — The world’s largest operating 1.2 million-pound steam locomotive is coming back to Colorado. The locomotive, known as Big Boy No. 4014, is 1.2 million pounds and 132 feet long, about ...