Make that same trip each year from Mesa, Az to Salt Lake.
Two ways to go:
17 to 74 or 60 to Wickenburg, 93 to Kingman, over Hoover dam to Las Vegas, then I-15 to SLC.
North on 17 to Flagstaff then 89 to Page, Kanab, Gunnison, then 28 to I-15 to SLC.
We have been both ways and the choice depends on the weather in flagstaff. If it is no snow we take the Flagstaff route, stay in Page or Kanab and then to SLC. Think it is the most scenic. If Vegas is a stop over you wish to experience then of course that is the way to go. We do not enjoy the Interstates as much as the hi-ways, but that is our preference, and you may choose differently. Vegas is more miles but time is about the same as the Interstate can be driven faster. If snow is forecast along I-15 we stay in Arizona and wait for a break. Snow on I-15 in Beaver county or on US 89 in Seiver County is not something we wish to encounter.
Other times of the year, take either route and mix it up if you do it more than once.
Steve & Sherri
2002 Winnebago Journey DL 39QD