Re: touring arizona
Welcome, and IMO Take C1 west to Medicine Hat then Take C3 to Lethridge, take 4 from Lethridge to Sunburst Montana, which becomes Interstate 15 South to you come to exit 95 in the lovely state of Utah. Take 20 east to just outside of Spry Utah and take US 89South to Flagstaff Arizona, roughly 1774 miles by my calc
Have a safe trip and remember you are traveling in the winter and some drivers, like all over the world do not drive well in the snow and ice that may be there.
God Bless the trip to be a safe one and joyfull