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 ...

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

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

OGDEN — A legendary locomotive made its return to Ogden this weekend. Union Pacific’s Big Boy No. 4014 made a weekend stop that drew thousands of visitors of all ages to Union Station from its arrival ...