Denver & Rio Grande Western Challenger

The Denver & Rio Grande Western (D&RGW) received two types of 4-6-6-4 "Challengers" during the age of steam. They were the L-105 Challengers and the Union Pacific Heavy Challengers.
== L-105 "Challenger" ==
The L-105 Challengers were built specifically for the D&RGW. They were primarily used for freight service, but could handle other duties as well.
== Union Pacific Heavy Challenger ==
When the Union Pacific Railroad ordered a new batch of heavy 4-6-6-4 Challengers, a mandate caused them to give six challengers to the D&RGW. They were relettered and renumbered before being out to service pulling freight like the L-105s.
== Demise ==
After the age of steam, the D&RGW scrapped every single challenger on their line. The only surviving challengers are Union Pacific not. 3977 and 3985, both of which are Union Pacific Heavy Challengers.
== Links ==
* List of Extinct Locomotives
Category:4-6-6-4 locomotives
Category:4-6-6-4 steam locomotives
Category:Denver and Rio Grande Western Railroad
Category:Steam locomotives
Category:Locomotives
Category:Scrapped locomotives
Category:Scrapped steam locomotives
Category:Articles that need an image
Category:Tender locomotives
Category:American locomotives
Category:American steam locomotives