I am planning a trip to San Francisco from Minneapolis in late Feb 2017.
Although I plan to hire an SUV such as a Kia Sorento or equivalent, I am trying to dodge snow at all times. That is I want to avoid Mountain passes that can get snowed in.
Google Maps indicates the following route.
This traverses through South Dakota and Wyoming ending up travelling along I-80 from Casper to San Francisco.
Although I driven all over the US, this is a new route to me.
If you can offer any feedback regarding this route or any more temperate ( weatherwise ) routes, I would be most appreciative.