Prior to taking this trip my wife, Linda, and I had been to 48 of our 50 states, missing only North Dakota and Idaho. My excuse for not visiting those states previously is that neither one of them is on the way to anywhere else that we wanted to visit. That being said, we had to come up with a plan to add those last two states to our checklist of places visited. I considered flying to Minneapolis, renting a car, and then driving through North Dakota and Montana to Idaho and back, but that did not sound very appealing. Then Linda suggested that we do another cross-country drive, similar to the U.S. 50 trip we took in 2013, which was perhaps her favorite of all the trips that we've taken. I considered the possibilities that such a trip would provide for visiting a few of the national parks that were on my bucket list and I bought into the idea. Another trip that I had on my wish list was to fly to Denver, rent a car, and do a circuit through Colorado. Linda suggested that since we were going to be out west anyway, we could just as easily do the Colorado loop on our way home. With that I was sold!