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1/8/2025
 
 
 
 
 
Owner: Union Pacific Railroad Company
Model:Alco 4-6-6-4Built As:UP 3985 (4-6-6-4)
Serial Number:70174Order No:S-1879
Frame Number:21X32 cylinders, 69" driversBuilt:6/1943
Notes:Challenger class 4664-4, donated to RRHMA.
Other locos with this serial:  UP 3985(4-6-6-4) CRR 676(4-6-6-4)
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UP 3985/Ringling Blue Unit
Title:  UP 3985/Ringling Blue Unit
Description:  Arriving at York Street, members of the circus troupe head down to the gathering.
Photo Date:  9/28/2010  Upload Date: 10/10/2010 4:53:49 PM
Location:  Denver, CO
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  216   Comments: 0
UP 3985
Title:  UP 3985
Description:  Pulling away after a routine maintenance stop
Photo Date:  9/28/2010  Upload Date: 9/28/2010 6:59:33 PM
Location:  Greeley, CO
Author:  Darryl Hill
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  380   Comments: 4
UP 3985 "Challenger"
Title:  UP 3985 "Challenger"
Description:  On her maiden voyage after a 2 year storage, she is pullling the Ringling Brothers, Barnum & Bailey Circus
Photo Date:  9/28/2010  Upload Date: 9/28/2010 6:59:23 PM
Location:  Carr, CO
Author:  Darryl Hill
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  604   Comments: 4
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 12/10/2010 3:47:27 PM
Location:  Speer, WY
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  243   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 12/10/2010 3:53:28 PM
Location:  Platteville, CO
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  263   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 12/10/2010 3:57:18 PM
Location:  Platteville, CO
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  201   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 12/10/2010 4:03:19 PM
Location:  Brighton, CO
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  251   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 12/10/2010 4:08:31 PM
Location:  Brighton, CO
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  210   Comments: 0
UP 3985
Title:  UP 3985
Description:  A member from the Circus makes a speech on the stage while 3985 is displayed in the background with the Circus Train
Photo Date:  9/28/2010  Upload Date: 12/10/2010 4:10:06 PM
Location:  Denver, CO
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  277   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 12/10/2010 4:15:28 PM
Location:  Denver, CO
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  231   Comments: 0
UP 3985
Title:  UP 3985
Description:  UP 3985 getting turned after uncoupling from the Circus Train
Photo Date:  9/28/2010  Upload Date: 12/10/2010 4:17:38 PM
Location:  Denver, CO
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  275   Comments: 1
A Beast of a Challenger
Title:  A Beast of a Challenger
Description:  The profile. Pulling the Circus train from Speer to Denver.
Photo Date:  9/28/2010  Upload Date: 10/13/2010 12:05:27 PM
Location:  Nunn, CO
Author:  amtrakswchief 4
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  567   Comments: 1
Going-Away
Title:  Going-Away
Description:  The UP 1985 pulling the circus train from Speer, WY to Denver, CO. The diesel engine was used mostly for dynamic brakes coming out of Speer.
Photo Date:  9/28/2010  Upload Date: 10/13/2010 12:05:28 PM
Location:  Platteville, CO
Author:  amtrakswchief 4
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  522   Comments: 0
UP 3985
Title:  UP 3985
Description:  Continuing to makes it's way towards Denver. UP 1985 pulling the Circus Train from Speer to Denver.
Photo Date:  9/28/2010  Upload Date: 10/13/2010 12:05:31 PM
Location:  Brighton, CO
Author:  amtrakswchief 4
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  527   Comments: 2
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 9/28/2010 1:54:48 PM
Location:  Cheyenne, WY
Author:  Sean Rodkey
Categories:  Steam,Passenger
Locomotives:  UP 3985(4-6-6-4)
Views:  316   Comments: 2
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 9/28/2010 1:58:09 PM
Location:  Adams City (subdivis, CO
Author:  Sean Rodkey
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  383   Comments: 2
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 9/28/2010 2:02:37 PM
Location:  Adams City (subdivis, CO
Author:  Sean Rodkey
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  508   Comments: 3
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 9/28/2010 2:04:18 PM
Location:  Denver, CO
Author:  Sean Rodkey
Categories:  Roster,Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  218   Comments: 0
UP 3985
Title:  UP 3985
Description:  Early morning light.
Photo Date:  9/28/2010  Upload Date: 9/29/2010 4:43:39 PM
Location:  Platteville, CO
Author:  Sean Rodkey
Categories:  Steam,Passenger
Locomotives:  UP 3985(4-6-6-4)
Views:  352   Comments: 3
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 9/29/2010 4:45:44 PM
Location:  Pierce, CO
Author:  Sean Rodkey
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  523   Comments: 1
UP 985
Title:  UP 985
Description: 
Photo Date:  9/28/2010  Upload Date: 9/29/2010 4:48:08 PM
Location:  Cheyenne, WY
Author:  Sean Rodkey
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  246   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 9/29/2010 4:49:40 PM
Location:  Cheyenne, WY
Author:  Sean Rodkey
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  196   Comments: 0
UP #3985
Title:  UP #3985
Description:  3985 sets in the yard ready to depart to meet the Circus Train.
Photo Date:  9/28/2010  Upload Date: 10/4/2010 9:35:45 PM
Location:  Cheyenne, WY
Author:  Terry Lovell
Categories:  Night
Locomotives:  UP 3985(4-6-6-4) UP 96(SW10)
Views:  846   Comments: 2
UP #3985
Title:  UP #3985
Description:  3985 sets in the yard ready to depart to meet the Circus Train.
Photo Date:  9/28/2010  Upload Date: 10/4/2010 9:37:03 PM
Location:  Cheyenne, WY
Author:  Terry Lovell
Categories:  Night
Locomotives:  UP 3985(4-6-6-4) UP 96(SW10)
Views:  762   Comments: 1
UP #3985
Title:  UP #3985
Description:  3985 sets in the yard ready to depart to meet the Circus Train.
Photo Date:  9/28/2010  Upload Date: 10/4/2010 9:37:51 PM
Location:  Cheyenne, WY
Author:  Terry Lovell
Categories:  Night
Locomotives:  UP 3985(4-6-6-4)
Views:  428   Comments: 1
UP #3985
Title:  UP #3985
Description:  3985 sets in the yard ready to depart to meet the Circus Train.
Photo Date:  9/28/2010  Upload Date: 10/4/2010 10:39:24 PM
Location:  Cheyenne, WY
Author:  Terry Lovell
Categories:  Night
Locomotives:  UP 3985(4-6-6-4)
Views:  390   Comments: 1
up #3985
Title:  up #3985
Description:  3985 sets in the yard ready to depart to meet the Circus Train.
Photo Date:  9/28/2010  Upload Date: 10/4/2010 10:39:47 PM
Location:  Cheyenne, WY
Author:  Terry Lovell
Categories:  Night
Locomotives:  UP 3985(4-6-6-4)
Views:  385   Comments: 1
UP Train SCYDV
Title:  UP Train SCYDV
Description:  Circus Train Departs Speer for Denver.
Photo Date:  9/28/2010  Upload Date: 10/4/2010 9:39:15 PM
Location:  Speer, WY
Author:  Terry Lovell
Categories:  Action
Locomotives:  UP 3985(4-6-6-4)
Views:  896   Comments: 10
UP Train SCYDV
Title:  UP Train SCYDV
Description:  Circus Train Departs Speer for Denver.
Photo Date:  9/28/2010  Upload Date: 10/9/2010 2:25:36 PM
Location:  Speer, WY
Author:  Terry Lovell
Categories:  Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  375   Comments: 0
UP Train SCYDV
Title:  UP Train SCYDV
Description:  Circus Train Departs Speer for Denver.
Photo Date:  9/28/2010  Upload Date: 10/4/2010 9:40:17 PM
Location:  Speer, WY
Author:  Terry Lovell
Categories:  Action
Locomotives:  UP 3985(4-6-6-4)
Views:  381   Comments: 1
UP Train SCYDV
Title:  UP Train SCYDV
Description: 
Photo Date:  9/28/2010  Upload Date: 10/4/2010 10:11:47 PM
Location:  Platteville, CO
Author:  Terry Lovell
Categories:  Action
Locomotives:  UP 3985(4-6-6-4)
Views:  403   Comments: 4
UP Train SCYDV
Title:  UP Train SCYDV
Description: 
Photo Date:  9/28/2010  Upload Date: 10/4/2010 10:12:12 PM
Location:  Platteville, CO
Author:  Terry Lovell
Categories:  Action
Locomotives:  UP 3985(4-6-6-4)
Views:  372   Comments: 0
UP Train SCYDV
Title:  UP Train SCYDV
Description: 
Photo Date:  9/28/2010  Upload Date: 10/9/2010 2:25:56 PM
Location:  Platteville, CO
Author:  Terry Lovell
Categories:  Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  393   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 9/28/2010 11:58:26 AM
Location:  Carr, CO
Author:  Joe Hill
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  294   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 9/28/2010 11:57:58 AM
Location:  Greeley, CO
Author:  Joe Hill
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  307   Comments: 1
Smoking it up!
Title:  Smoking it up!
Description:  The big Challenger starts up again after a 10 minute service stop at Greeley, CO with the Ringling Circus Train in tow.
Photo Date:  9/28/2010  Upload Date: 9/28/2010 11:56:45 AM
Location:  Greeley, CO
Author:  Joe Hill
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  443   Comments: 3
UP 3985
Title:  UP 3985
Description:  The Challenger pulls the Ringling Brothers Circus train north of Nunn.
Photo Date:  9/28/2010  Upload Date: 9/15/2016 7:52:28 PM
Location:  Nunn, CO
Author:  Richard Kundert
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  169   Comments: 65537
Circus Train Steam History
Title:  Circus Train Steam History
Description:  The UP uses the 4-6-6-4 Challenger No. 3985 to pull the Ringling Bros and Barnum and Bailey Circus train from Speer, WY to Denver, CO. There were way too many morons out on the road. Makes me wish I had a shotgun.
Photo Date:  9/28/2010  Upload Date: 10/13/2010 12:05:26 PM
Location:  Speer, WY
Author:  amtrakswchief 4
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  602   Comments: 2
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/29/2010  Upload Date: 10/10/2010 4:53:39 PM
Location:  Cheyenne, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  230   Comments: 0
UP 3985 At Night
Title:  UP 3985 At Night
Description: 
Photo Date:  9/29/2010  Upload Date: 10/10/2010 4:53:40 PM
Location:  Cheyenne, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  240   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/29/2010  Upload Date: 10/10/2010 4:53:41 PM
Location:  Cheyenne, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  225   Comments: 0
UP 3985 waiting
Title:  UP 3985 waiting
Description: 
Photo Date:  9/29/2010  Upload Date: 12/11/2010 7:10:58 PM
Location:  Carr, CO
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  289   Comments: 0
UP 3985 & UP 3202 waiting to come into the yard
Title:  UP 3985 & UP 3202 waiting to come into the yard
Description: 
Photo Date:  9/29/2010  Upload Date: 12/11/2010 7:12:59 PM
Location:  Cheyenne, WY
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4) UP 3202(SD40-2) UP 3201(SD40-2)
Views:  446   Comments: 0
UP 3985 switching around the yard
Title:  UP 3985 switching around the yard
Description: 
Photo Date:  9/29/2010  Upload Date: 12/11/2010 7:17:05 PM
Location:  Cheyenne, WY
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4) UP 96(SW10)
Views:  771   Comments: 0
UP 3985
Title:  UP 3985
Description:  It's easy to see why this is a favorite shot of trains headed east from Cheyenne...it doesn't get any better.
Photo Date:  9/30/2010  Upload Date: 10/20/2010 8:07:43 PM
Location:  Archer, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  226   Comments: 2
UP 3985
Title:  UP 3985
Description:  Missouri Eagle headed east.
Photo Date:  9/30/2010  Upload Date: 10/10/2010 4:53:44 PM
Location:  Archer, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  526   Comments: 9
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/30/2010  Upload Date: 10/10/2010 4:53:45 PM
Location:  Dix, NE
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  215   Comments: 0
UP 3985
Title:  UP 3985
Description:  The parting shot of the chase, which was pretty wicked & took me farther west than I'd planned! The train has just made a dip back into Colorado here, making a pit stop in the speed trap town of Julesburg.
Photo Date:  9/30/2010  Upload Date: 10/20/2010 8:45:18 PM
Location:  Big Springs, NE
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  153   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/30/2010  Upload Date: 10/10/2010 4:53:46 PM
Location:  Lodgepole, NE
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  184   Comments: 2
Chevy-Challenger-Cheyenne
Title:  Chevy-Challenger-Cheyenne
Description:  Davy Vs Goliath. 360 Meets 4-6-6-4. Impala Against Alco. However you wanna word it, this Cheyenne-Chevy-Challenger moment comes just after sunrise on the first day of the Missouri River Eagle tour. The ultimate "Coke can" photo moment, to give you an idea how big it really is.
Photo Date:  9/30/2010  Upload Date: 10/20/2010 9:07:19 PM
Location:  Cheyenne, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  596   Comments: 5


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