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

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

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 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 ...

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

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

(NEXSTAR) — The ground rumbles. A billowing cloud of steam forms in the sky. Then suddenly, the 1.2 million-pound locomotive known as Big Boy No. 4014 is pulling into a station near you. It won’t be ...