Route 66 is no longer a part of the US Highway system. Some locales abound with historical markers, but it officially ended on 27 June 1985. It did however run through Arizona like the Grand Canyon.
Death Valley, and route 66 are in CA. The Grand Canyon is located in AZ, and the Overlook Trail is several states.
California
Arizona
Arizona
Nevada
Two things to know: 1) Route 66 has not existed as a highway since 1985. 2) Yellowstone is nowhere near where Route 66 used to run.
Arizona
California?
Nevada
sounds like Nevada to me
North Dakota...underground rooms in caves have same names
California