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

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

A massive steam locomotive will be celebrating 250 years of American independence by making its first-ever coast-to-coast ...

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

Union Pacific has released new details on the schedule for its first-ever coast-to-coast tour of its 'Big Boy' historic ...

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

The US is preparing another historic coast-to-coast journey for Big Boy 4014, the world’s ...

Union Pacific will join the nation in celebrating 250 years of American independence and innovation this year with its first-ever coast-to-coast steam tour led by the legendary ...

Big Boy No. 4014, described as “the Elvis Presley of locomotives,” could begin its first ever coast-to-coast tour in just a ...

Union Pacific (UP) is joining in the celebration of 250 years of American independence and innovation this year with its ...

The tour schedule for the western leg of Big Boy's historic coast-to-coast tour was announced Monday. The world's largest locomotive, which weighs ...

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 ...