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 ...

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

Union Pacific has announced the first leg of the tour of its legendary Big Boy No. 4014 locomotive will begin by leaving ...

The world's largest steam engine is coming back to Utah this spring in the first leg of its first-ever coast-to-coast tour, ...

(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 ...

Above: Previous coverage of ‘Big Boy’ locomotive’s first coast-to-coast tour (NEXSTAR) — The ground rumbles. A billowing cloud of steam forms in the sky. Then suddenly, the 1.2 million-pound ...

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.

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 ...

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