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

7.4K views · 1.3K reactions | Views of Union Pacific's Challenger locomotives with some information on their history with the UP. From the GSVP show "Big Boys and Challengers" https://rfd.video/BBandChallengers | Steam Giants | Facebook

167K views · 8.8K reactions | Union Pacific Challenger #3985 puts on a disguise as she prepared for a stint on the ex-Clinchfield RR to star on the annual CSX Santa Train. From the GSVP show https://rfd.video/ChallengerEast | Steam Giants | Facebook

7.3K views · 810 reactions | A rare look at another big steam locomotive on the Union Pacific as it teams up with a Challenger. From the GSVP show "Big Boys and Challengers" https://rfd.video/BBandChallengers | Steam Giants | Facebook

66K views · 5.1K reactions | Most of us know this, but the 4-6-6-4 "Challenger" type locomotive made famous by the UP 3985 is not exclusive to the Union Pacific. In fact the Northern Pacific had 47 of them, designated as Z6s, Z7s & Z8s built by ALCO between 1936 and 1944. From the Green Frog Productions show "Steam on the Northern Pacific" https://rfd.video/SteamNP | Steam Giants | Facebook

79K views · 579 reactions | La 4-6-6-4 Challenger, una versión aligerada de la Big Boy de la Union Pacific del año 1943, nos demuestra las capacidades del vapor remolcando una composición con 143 vagones portacontenedores, de dos pisos, llevando el tren a 56 km/h en una pendiente de cierto empaque. | Vía Libre. La revista del ferrocarril | Facebook

With the water tank at Harriman in the background, we watch as Union Pacific Challenger 3985 slowly moves down the main. Great sound! Clip from "Union Pacific's 4oth Anniversary Steam Excursion" by Pentrex. http://rfd.video/40thSteam | Railfan Depot

We see Challenger #3985 west of Elm Creek, Nebraska and arriving at Kearney. From the Railway Productions show "The Challenger Union Pacific’s Legend of Steam" https://rfd.video/Challenger2008 | Steam Giants