Union Pacific’s Big Boy 4014 heads out on first coast-to-coast tour

Union Pacific sent Big Boy No. 4014 out on its first coast-to-coast steam tour, a 10-state run built around more than 50 whistle-stops, public display events in eight cities and a Fourth of July celebration in Philadelphia. The locomotive’s size, speed and smoke still pull in crowds that treat each appearance less like a train stop than a traveling piece of American industrial memory.

No. 4014 is the world’s only operational Big Boy, one of eight still in existence. Union Pacific originally took delivery of the locomotive in December 1941, when the 25 Big Boys built exclusively for the railroad were pressed into service to help move heavy freight during the World War II era. At about 132 to 133 feet long and roughly 1.2 million pounds, the articulated 4-8-8-4 steam engine was designed to handle tight curves and steep mountain grades while hauling the heaviest loads.

The locomotive returned to service in 2019 after a multi-year restoration, and Union Pacific has kept it at the center of its heritage program alongside No. 844, another steam engine preserved and operated by the railroad. The 2026 tour extended that preservation work into a national spectacle, connecting rail history with the communities that still turn out to see it cross a bridge, round a curve or roll past a depot with its whistle sounding.

That pull has not faded in the places where the train stops. Public display events in eight cities and whistle-stops across Pennsylvania, Ohio, Indiana, New York and other states gave families, railfans and local businesses a rare chance to gather around a working steam locomotive built before America entered the war. In Philadelphia, the Fourth of July celebration tied the tour to the nation’s 250th birthday observance, and Union Pacific framed the run as part of the railroad’s role in building and unifying the country.

The railroad has used earlier Big Boy outings to show how much attention No. 4014 can still command. In 2021, the locomotive completed a 10-state tour and traveled more than 4,000 miles in 34 days, underscoring how unusual a steam excursion of this scale has become. For Union Pacific, the draw is not just nostalgia. It is a way to keep a landmark machine moving, keep the preservation story visible, and keep the tourist economies around each stop full of people waiting for a sight once thought to belong only to museums.