🚂 Big Boy 4014 Upcoming Schedule (June–July 2026)
Major Pennsylvania & New York Stops
- July 2, 2026 — Jim Thorpe → Reading → Pottstown
- Jim Thorpe: Depart 9:00 AM
- Reading: Arrive 1:30 PM, Depart 2:15 PM
- Pottstown: Arrive 3:30 PM, Depart 3:45 PM Also confirmed to pass through Tamaqua on July 2.
- July 4, 2026 — Philadelphia, PA (Display Event)
- Arrive 8:00 AM
- Depart 2:00 PM Location: Intrepid Ave. & League Island Blvd.
Wednesday, July 8
Enola, PA
NO PUBLIC ACCESS
Depart: 9:00 a.m. EDT
Lewistown, PA
Roundhouse Road crossing
Arrive: 12:45 p.m. EDT
Depart: 1:15 p.m. EDT
Altoona, PA
Railroaders Memorial Museum
1200 9th Ave.
Arrive: 5:15 p.m. EDT
Depart: 5:45 p.m. EDT
Altoona, PA
NO PUBLIC ACCESS
Private Norfolk Southern employee event
🚂 What Big Boy Actually Is
Union Pacific Big Boy refers to a class of 4-8-8-4 articulated steam locomotives built in 1941–1944 by the American Locomotive Company (ALCO). Only 25 were ever made. Only 8 survive. Only 1 runs today: Big Boy 4014.
🏔️ Why It Was Built
The Wasatch Mountains in Utah were a brutal bottleneck for freight. Union Pacific needed a locomotive that could:
- Pull massive trains
- Climb steep grades
- Maintain high speed
- Survive harsh mountain conditions
The result was the Big Boy class, the largest steam locomotives ever to enter regular service.
🖋️ Why It’s Called “Big Boy”
During construction, a worker chalked “Big Boy” on the smokebox of the first locomotive. The name stuck. UP even kept the chalk-style lettering on the finished engines.
🚂 In Service (1941–1959)
The Big Boys entered service during World War II, hauling military equipment and freight across the western U.S. They normally operated between Ogden and Cheyenne, the toughest section of UP’s mainline.
They remained in service until 1959, when diesel locomotives finally replaced them.