Traveling on I-70 West to Monument Valley to Zion

I think we are talking about US 160, not I-60. The part I am familiar with in Colorado runs from Walsenburg (intersects with I-25 there) to Durango in the west. As has been said LaVeta is one of the easiest passes in Colorado and Wolf Creek is up a notch, but so much better now than the first time I drove over it in the 1960s.