Road tips driving to UTAH

We've taken your route 2 listed in both directions several times with no problem. At that time we ware towing a 32' TT, weighing in at 11K and being towed with a 99 F250 V10. With our current 35' fifth wheel, towed by an '11 F350 DRW Diesel, we would not hesitate. Fuel up in Flagstaff, then again at Jacob Lake before you drop down into Kanab, or fuel in Kanab. The gas station at Jacob Lake is easy in and out for any size of rig and it's a Chevron. In Kanab, you've got the same, but may be lower, I don't know. Either way, you've got plenty of places to fuel. As noted here though, having a Mountain Directory West is good to have. The climb from the Vermillion Cliffs area up to Jacob Lake is about 6% and winding, but it's do-able.

TexasChaps

We made the trip you are planning just in reverse about three years ago (We traveled from Bryce N.P. south to Williams AZ). Our route was from Bryce (Highway 12 to 89). Highway 89 south to Kanab. We then headed East on 89 to Page then continued south on 89 to Flagstaff. At this point we turned west for Williams.

We have travelled East & West on Highway 40 and South on 17. I have no problem suggesting either of these route for you. I didn't see where in Texas your starting point was.

There were plenty of fuel stops and services along the way. It is desert and we were passing through in Sept. & Oct. In Kanab there is a great Western Movie Museum. Many (many) things to stop and see so take your time. There were no major hills.

Enjoy your trip.
Hap

follow your route in google earth. shows elevations, etc.
bumpy

Get Mountain Directory West as a reference.

What kind of truck and how big is your trailer?

The least stressful would be to stay on the Interstate- I-40 all the way to Highway 95 through Searchlight and then connecting with the 15 in Las Vegas. Certainly more miles but easier on the truck/trailer.