Big Boy 2025 Schedule. See the full schedule of public display and viewing events, and how to bid for cab rides. 4014, the world's largest operating steam locomotive, is touring the heartland of america in fall 2025.
4014, the world’s largest operating steam locomotive, is touring the heartland of america in fall 2025. 4014, the world’s largest operating steam locomotive, will steam across 10 states in the fall of 2025.