Looking at maybe riding US 2 east to west - either the whole thing (sort of through Canada), or picking it up just west of the Great Lakes.
It's basically October now and we wouldn't be starting for say a week - too cold to be pleasant? (I mean, I'm sure it's possible, but we are lazy creatures accustomed to pleasant rides...)
If it's not already too late, how late is too late? If you don't know for all of it, please feel encouraged to answer for specific bits near you or just whatever you are familiar with.
PS - wasn't sure which forum would be best - if anyone wants to move it, please do!