I don't know the area.
Looks like the main road is I-84, and that it goes through the mountains.
I'm wondering how the roads are, if there's a bit of snow? (which is scheduled).
In general, is road pretty clear, or is one of those drives that is subject to fairly regular closures/slowdowns, in the winter?
GoogleMaps says it should take just under 4 hours. Is that realistic?
Thanks in advance for your help.