Originally Posted by Uncle Ben
US 40 to SLC takes 14 hours....I-80 to SLC takes right around 10hrs. I have done both several times. I'm into getting to Kalifruity more than sightseeing. I'll sightsee on a family trip another day!
I-70 has you crossing Floyd Hill, prior to turning on I-40 or add Eisenhower and Vail Passes to turn at Rifle Then you climb up over Triangle Park.
I-40 has you crossing Berthoud, Muddy, Rabbit Ears and Strawberry passes.
I was trying to avoid all of the really bad I70 road and the mountain passes. I think I am taking I80.