Well, my package has gone from Cali, to Nevada, to Utah, to Wyoming, and now Denver. I know from past experience, that it goes from Denver straight to Arizona.
I can't figure out for the life of me why DR doesn't just ship straight to AZ from CA. I mean, we do BORDER each other for a few 100 miles.

Doesn't it depend on the service they use? I mainly use USPS and I can tell you the routes to my place from anywhere in the country. But recently something I bought from eBay is using UPS and it's gone WAAAAAAAAAAAYYYYYYYY up North in Jersey instead of down south to begin with. Which I can't figure out unless that's the nearest UPS distribution center?