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We get more and more requests that simply do not have enough information to offer any useful advice. Yours, unfortunately is a case in point. You tell us nothing about how much time you have, only that you can't "go as far and as fast per day" As far as what? As fast as what? You say that I-80 is very remote, but how so? You say you want "more populated". More populated than what? Because the basic thing you haven't told us, and without which we don't have a clue is: Which Portland?

AZBuck