John Wayne had originally intended to play the lead role himself, but was prevented from doing so due to his busy schedule. Before Randolph Scott was chosen, Joel McCrea and Robert Preston were also considered.
Director Budd Boetticher and stars, Randolph Scott and Gail Russell, rode horses to the filming location in Lone Pine, California every morning, while the rest of the cast and crew took conventional transportation.
After realizing he would not be able to star in the movie John Wayne considered abandoning it altogether. However, he then learned that Robert Mitchum's representatives were interested in purchasing the story as a vehicle for their star, so he gave the project to Warner Bros.
When Lee Marvin remarks that it looks like rain, there are clouds in the sky, but in the next cut to Scott and Russell the sky is clear and azure blue.
Stride's leg wound changes from his right leg to his left leg (as evidenced by his using the rifle for a cane with first his right hand and then his left) and then back to his right leg by the end.