Traveling thru Southern Utah + Grand Canyon

I have towed 34 foot bumper pull travel trailers all over the west and as I am based in Utah I have pulled on most of the roads you are looking at. I usually don't comment to much on these threads because frankly I'm not scared to pull anything anywhere and I realize that most don't have my experience towing or driving mountain type roads. I will say that Utah sees 1000's of campers on these roads every year with no problems so any route you take you will be fine. One word of cation I will give you is if you don't like towing in heavy traffic going from 0 to 80+ miles an hour then back to a dead stop its best to avoid I 15 from Ogden to Provo between the hours of 0600 to 0900 and 1600 to 1900. Other than that its usually a clear sail down the Wasatch front.

Hwy 6 isn't a bad tow, you do climb coming out of Spanish Fork for a ways but nothing serious. Do be careful on Hwy 6 as its one of Utah's most dangerous roads know for a lot of head on collisions mainly due to inattentive drivers crossing the center line while winding down the canyon.