Union Pacific Big Boy Whistlestops in Northern Colorado

Big Boy whistlestops in Greeley – Colorado Model Railroad Museum and in Eaton, Colorado.

The Union Pacific Big Boy No. 4014 will be making two whistle-stops in Northern Colorado, Tuesday September 30 at the Colorado Model Railroad Museum in Greeley, Colorado, and in Eaton, Colorado on October 1 as part of a limited 2025 tour. The first stop will be on Tuesday, September 30, between 12:45 p.m. and 1:15 p.m. MDT, and the second stop will be in Eaton on Wednesday, October 1, between 12:30 p.m. and 3:15 p.m. MDT. The locomotive will be traveling from Cheyenne, Wyoming to Denver, Colorado on September 30, and returning on October 1. See the event website for more details.

Detailed Schedule:

• Sept. 30
  • Cheyenne, Wyoming, departs 11 a.m. MDT
  • Whistle Stop at the Colorado Model Railroad Museum, Greeley, Colorado, 12:45 p.m.-1:15 p.m. MDT
• Oct. 1
  • Eaton, Colorado, 12:30 p.m.-1 p.m. MDT (park west of Highway 85 and cross at the Collins Street pedestrian crosswalk)
  • Cheyenne, Wyoming, 2:30 p.m.-3:15 p.m. MDT; operational move to turn locomotive at Speer, Wyoming, returning to Cheyenne 5 p.m. MDT.

There will be no public access to the locomotive in Cheyenne or Denver due to security and safety concerns, according to the Union Pacific Railroad.

Note: Parking will be very limited, plan to arrive early.