Does anybody know who or when says the location of where they're going?

They're going to a ranch about four miles from where they stop along the Salinas River, just outside of Soledad.

A few miles south of Soledad, the Salinas River drops in close to the hillside bank and runs deep and green.

He said angrily, “We could just as well of rode clear to the ranch if that bastard bus driver knew what he was talkin’ about. ‘Jes’ a little stretch down the highway,’ he says. ‘Jes’ a little stretch.’ God damn near four miles, that’s what it was! Didn’t wanta stop at the ranch gate, that’s what. Too God damn lazy to pull up. Wonder he isn’t too damn good to stop in Soledad at all.