Salt Lake City to Casa Grande AZ, Best route?

How heavy are you?

If you're over 30K pounds in the box, go through Vegas.

89 is a little hillier, not much, cause 93 is very hilly as well.

I take 89 mostly.

 

Depends what day and what time. I drive early. Take 15 down to the UT 20 ( Panguitch ). Takes you over the hill to 89. Now the first 60 or 70 miles of that on 89, there are one or two deer in that valley.

 

both routes are about the same time .even know vegas is like 70 miles longer. i usually take 89 when i wanna get off the interstate. i just wouldnt run it at night. because when u leave i15 in utah and pickup utah20 or whatever highway that is... its deer city out there...yes 89 is kind of touristy thru kanaab but it really is a short part of the trip...but way less traffic and stress than running i15 to 93..in my opinion.

 

delete.

 

NV has very good highways. Yet, on a two way highway there is no avoiding some four wheelers in front (tourists or not). Take your time, keep the distance no matter the speed and it will be fine. The thought that it will end eventually will keep you in peace.

 

UT-20 is very steep and winding down to US-89 to the point I would almost consider cutting over on I-70 to 89 if I was heavy and going that way to Phoenix. It's definitely the more scenic route.

 

Ut20 is 8 percent grade for a couple miles.. I would hardly call it steep. It is a good size Mountain but nothing that can't be handled.. There's guys pulling 100k thru there everyday