Train Simulator 2017 - Big Boy V.s. Challenger

Train Simulator 2017 - Big Boy V.S. Challenger (Series 2 Ending!)

Train Simulator 2017 - Big Boy Vs The Flying Scotsman!!

Gravity Station

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Train Simulator 2017 - Flying Scotsman V.S. Big Boy (Race!)

Trainz Races!! UP BIG BOY VS UP CHALLENGER!!!

Train Simulator 2021 - 9F 92212 VS Big Boy 4014(Race)

LaZeR JET Plays... Train Simulator 2017 - Union Pacific Big Boy

Train Simulator 2017 - BIG BOY

Train simulator Big boy & Challenger

UP Big Boy vs UP Challenger (Trainz 2019) Minjeo's Races

2 Diesel trains and an M7A train wrong railing at Philipse Manor, and all of them are expresses.

Aaron's Adventures

Train Simulator 2020 - Old Big Boy V.S. New Big Boy (Race!)

Train Simulator 2013: The 'Big Boy'.

B&C Entertainment

Train Simulator 2019 - 9F Evening Star V.S. UP BiG Boy (Strength Challenge)

Big Boy VS. Challenger: The Race | Train and Rail Yard Simulator

Union Pacific Big Boy vs Union Pacific Challenger in Trainz 2020

Train Simulator - Mighty American Loco... Again! (RACE!)

Train Simulator 2017 Big Boy Local Work Granite to Cheyenne Standard Scenario [PC]

Train Simulator 2017 Big Boy Test Drive

Train & The Rail Yard Simulator Big Boy 4006 & UP Challenger

🌼Central Pacific Jupiter 60 Show🌼