Suggestions on a route without Interstate. Leaving in May...time is not a concern. I was looking at US 50, but open for suggestions from those that have made the trip.
We I you, I would go across the top of the country as soon as the weather breaks. Have passports and no guns and cross into Canada after a day at the locks. The run across Ontario is a trip on its own until you get to Ottawa. When you get clear, cross back into the US at Ogdensburg and pick your way east. You then decide how you want to travel form there on.