Here is my version on Google maps of the trip. I’d suggest you click on “view large map” and move it around to see it in more detail. These maps indicate the towns we are going to come across, but it likely will not always be the same road between the towns. But I found it a good way to visualize the trip.
This one is the first leg up to Carbondale, Illinois. There are some points that are incorrect
This map is the second leg into Colorado.
And this leg is through Colorado to Montana
And final leg to Oregon