The 133-foot-long locomotive is the only Big Boy to still travel the tracks.

Cheyenne-based Big Boy 4014, the world's largest operating steam locomotive, will make its first ever coast-to-coast tour ...

For the first time ever, both coasts could receive a visit from the world's largest operating steam locomotive.

DENVER (KDVR) — The world’s largest operating steam locomotive, known as Big Boy No. 4014, is coming back to Colorado — and this time, it’s bringing a friend. Union Pacific, a railroad company, ...

OMAHA, Neb.--(BUSINESS WIRE)-- Union Pacific Railroad's iconic Big Boy No. 4014, the world’s largest operating steam locomotive, will journey between Wyoming and Colorado later this month. The limited ...

OMAHA, Neb.--(BUSINESS WIRE)--Union Pacific Railroad's iconic Big Boy No. 4014, the world’s largest operating steam locomotive, will journey between Wyoming and Colorado later this month. The limited ...

Union Pacific Railroad will join the nation in celebrating 250 years of American independence and innovation this year with ...

Union Pacific will celebrate the 250th year of American independence with its first-ever coast-to-coast steam tour led by the Big Boy locomotive.

The world's largest operating steam engine, Big Boy No. 4014, is returning to Utah for a two day stop in April.Union ...

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 ...

The world’s largest operating steam locomotive has several Louisiana whistle-stops and overnight stays in two cities as part of a 10-state tour. Big Boy No. 4014 will be on display Saturday in New ...