Union Pacific steam locomotive 4014, “Big Boy,” pulls out of Prescott, Arkansas on a cold fall morning with its excursion train as it heads north on the UP Little Rock Subdivision on November 13, 2019. | Jim Pearson Photography

Union Pacific “Big Boy” 4014 is the largest operating steam locomotive in the world and one of the biggest ever built. The locomotive is seen here in July of 2024 on a publicity tour for the Union Pacific Railroad. Union Pacific Railroad #trains #steamtrain #bigboy #bigboy4014 #trainspotting #unionpacific | Coasterfan2105

Union Pacific’s legendary Big Boy #up4014 – the world’s largest operating steam locomotive – is set to embark on its first ever coast-to-coast tour in 2026! As this icon connects the nation, we are working to build the future: America’s first transcontinental railroad. 🎥Take a behind-the-scenes look at history in motion and stay tuned for the schedule details! | Union Pacific Railroad

Classic Big Boy action on Sherman Hill. From the WB Video show "Union Pacific's Last Steam Giants" https://rfd.video/LastSteamGiants | Steam Giants

A little Union Pacific steam survivor is followed with Big Boy action near Green River, Wyoming. From the Pentrex show "Big Boys Cab Forwards Challengers & Daylights" https://rfd.video/Griffiths | Steam Giants

A look at Big Boy locomotives #'s 4011, 4012 & 4013. From the Pentrex show "Union Pacific's Big Boy Collection" https://rfd.video/BBCollection | Steam Giants

Worlds largest steam locomotive!! Big Boy 4014 Union Pacific RR | Chopperguy

AWESOME! The Union Pacific Big Boy #4014 charges out from a snowy backdrop in Hays, Kansas, creating an amazing "Polar Express" moment. Thanks to Nex-Tech for the video! | KAKE News