Chicago to Cedar City, UT - route 70 or 80?

[USMCTruckerE5]

Looking to make a trip from Chicago to Cedar City, UT. Looking at the maps, can come across and stay on 70 through Denver or split off onto 80 and go north around through Salt Lake City-

Thoughts? Which is flatter? Mile diff only about 80 mile, time about 1 hour, but looking for thoughts on the drive.

 

[luckyeddie]

80, all the way. I love the scenery, and 80 does not have any toll roads in that area.

Eddie

 

[USMCTruckerE5]

80, all the way. I love the scenery, and 80 does not have any toll roads in that area.

Eddie

Thank you.