There are several towns along US-395 like Lone Pine or Bishop that could be a good choice if Tioga Pass is open. If it is closed, then you'd likely want to look at the Lake Isabella area.

There are several online maps that will plot miles, such as Google maps and Mapquest. RTA also has a map center which you may find helpful, but the focus there is more on finding attractions along the way, rather than specific routes and mileage.