That'll throw them about a day behind.
4 seconds sound clip from the The Train Robbers movie soundboard.
You can hear this line at 01:17:24 in the Blu-ray version of the movie.
Quote context
[...]
- If those horses stop running, they'll start thinking of water... head for that river.
- So many of them, they won't be hard to track.
- Yeah, they double back to the river, pick up their saddles...
- That'll throw them about a day behind.
- Then where the hell are they?
- If I knew that, I could get some sleep tonight.
- We'll be at the train stop tomorrow. And then what?
[...]