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

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

CHEYENNE, Wyo. — Union Pacific’s Big Boy will return to California this spring in the first leg of its planned coast-to-coast ...

(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 ...