04/17/2026
The Big Boy is coming back! 🚂
Union Pacific’s Big Boy No. 4014 is the world’s largest operating steam locomotive, at 133 feet long and weighing 1.2 million pounds, and it is making its way back to Ogden this weekend. You can see the Big Boy for yourself at Ogden’s Historic Union Station on Saturday, April 18th from 10 a.m. to 5 p.m. and Sunday, April 19th from 11 a.m. to 3 p.m.
Of 25 Big Boys commissioned exclusively for Union Pacific Railroad in the 1940’s, 8 remain — with No. 4014 being the only running Big Boy. They operated primarily between Ogden, Utah and Cheyenne, Wyoming.
This incredible photo, courtesy of features Union Pacific Big Boy No. 4000 at the Ogden Roundhouse.