Where is Big Boy now?

Written by Editorial Team | Last Updated: August 2026

Union Pacific's legendary Big Boy locomotive, specifically engine number 4014, spends much of its time housed at the Steam Shop facility in Cheyenne, Wyoming, when it is not actively traveling across the United States on special heritage and public exhibition tours. As the world's largest operational steam locomotive, it frequently embarks on high-profile multi-state national tours celebrating historical railroad milestones and connecting with rail enthusiasts nationwide. Railfans can monitor its exact geographic position and upcoming tour stops using the official Union Pacific live steam tracker map online.

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