That's the first thing I thought of when I read Colton, CA. They have their own street where the 10 & 215 meet.
lol. seriously though if that load was local to me. that would be around my starting offer anything less than 600 loaded miles i pretty much always charge round trip millage even if you find a re-load load/unload times will eat up a good part of your day. you would be lucky to get more than 400 loaded miles in on a day with a load like that. then again im not a general freight guy so what do i know.
If that offer was for 5 loads a week, someone would probably snap it up. A one shot deal, probably going to be hard to find takers. It will go at some point for that price.