Here is an article about the 2018 Motorcycle Cannonball motorcycle ride across the country.
"Since 2010, the biennial Motorcycle Cannonball has taken riders of vintage motorcycles — built prior to 1929 — on a coast-to-coast backroad odyssey, described as “the most difficult antique endurance run in the world.” This year’s journey — the fifth Motorcycle Cannonball — takes participants from Portland, Maine, to Portland, and Oregon."
Here is the full article from Hemmings, VT:
https://www.hemmings.com/blog/2018/09/11/2018-motorcycle-cannonball-makes-a-stop-at-hemmings/
And here is the website about the ride itself with updates:
http://www.motorcyclecannonball.com/