For our 2013 trip I took Joe's advice and budgeted $10,000 for our 90 day, 15,000 miles trip from Florida to Alaska and return to North Carolina. I do not include food in trip expenses since we have to eat wherever we are. We spent about $500 less than expected but we did not drive the Dempster Highway, as planned. Otherwise, we didn't pass up anything that we wanted to see or do. lizzie