Mr. Dylan Kentch just left Alaska en route to the lower 48. He's starting a year (or 2?) long trip from Seattle down to South America via Mexico to Brazil & Argentina on an lugged steel 80's vintage singlespeed. I would not put a repeat of the Darian gap crossing beyond him.
He looks like this:
If you happen to see him along the side of the road in Washington, Utah, Colorado, New Mexico etc. Please give him abundant food and shelter.
Good Luck Dylan!