It doesn't get any bigger than this for train enthusiasts. The Union Pacific's Big Boy No. 4014 steam locomotive will rumble from Cheyenne south through Greeley and on to Denver this week, and you can ...

Union Pacific’s Big Boy No. 4014 – the iconic, one-million-pound steam locomotive – made a stop in Denver Wednesday morning, and Airtracker7 was overhead. Marjorie Taylor Greene Tells ’60 Minutes’ ...

Coloradans have dreamed for decades about new passenger rail lines to the mountains — and they’ve always gone unfulfilled. But a new project could be different. “As northwest Colorado grows, it would ...

Editor’s note: This article has been updated to clarify the weight of the train. DENVER (KDVR) — “Big Boy,” one of the world’s largest trains, is taking off on Wednesday and plans to stop in three ...

A look back at the Boulder-Denver Interurban Railroad, the fast electric train line that shaped the region before cars took ...

Colorado Governor Jared Polis has a singed a historic lease with the Union Pacific Railroad that will unlock a host of possibilities for a new ski train. The lease replaces the one signed in 1926 for ...