http://www.strikingviking.net/ While doing some research for a Bird rider who plans to ride around the world starting in Australia I encountered this fellow's interesting adventure. This is his blog. It apears that many folks have ridden round the world on all continents, including Antartica. And, on all types of bikes, big and small. Even scooters. While my bucket list does not include this, you younger riders might have entertained the idea of, "I wonder what it would be like to just get on my bike and go out there?"
This is just for interest sake, so there's no need to flame me.
PS, I think after reading sections of his book, he qualifies for, "The worst road trip ever." post.