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There are a several problems with your trip as you've basically outlined it. First and foremost, Chicago to Los Angeles is over 2100 miles. If you only drive 3 hours a day, maybe 180 miles a day, you'll need to be driving a good 12 days to make just that portion of your trip, leaving no real time for the drive to San Francisco. So the first thing you will need to come to grips with is the great size of this country and that three hours a day of driving is insufficient to do what you have in mind. Secondly, US-66 doesn't exist anymore. It was decommissioned over 25 years ago and has been replaced by the Interstate Highways: I-57/I-44/I-40. The old road is still out there but it is no longer marked as a US highway and can be almost impossible to follow. There are plenty of good roads between Chicago and Los Angeles, and there are lots of things to see. Too many really to give you a quick and easy answer. So what is it that you are hoping to see or accomplish on your trip? If we knew the answer to that, we could give you some information that you would find useful.

AZBuck