My wife has had enough of the cold weather and wants to head out to Yuma from the Missoula area within the next 2-3 weeks. I assume 93 south once the passes in Idaho are OK. Any route recommendations ...
This is the time of the year that I tend to prefer the Interstates, because of the priority for keeping them open. Heavy traffic also helps to defeat winter weather. So I-15 to Las Vegas, then US-95, or RCMan's more detailed route being slightly shorter.