When we made our trip last year, we had no direction. We had somewhere we had to be on a certain date and the route we took to get there was of no consequence. There was one thing I wanted to do and it was stand in four states at once at Four Corners Monument. Somehow, we completely missed it even though we had to have been within 50 miles of it. I have no excuse, I must have missed the sign. Luckily, it was directly on the route from the Grand Canyon to Cortez, CO. I mean, I did not even need to make a detour to get there. Unluckily, they were closed by the time we got there.
No matter, we wanted to meet my cousin in Cortez for lunch the next day anyhow, so we backtracked the 40 miles and went there. AZ, NM, CO and UT are the four states. It was worth the drive, as that part of the country is beautiful. Used the construction stops to take shots.