I have not and have no desire to do so. After about five weeks, I start thinking of going home. Two of my trips were a bit over five weeks, that is long enough for me.
But I met the gal in the photo in a campround in California on the Pacific Coast in 2014, at that time she was on year seven of her trip.
Her bike was covered with location stickers, her front panniers (Ortlieb) had been on the trip for all seven years. Almost every part on her bike had been replaced at least once, her tent was a couple years old and she was thinking of replacing it. She guessed that her bike frame had 100,000 km on it. Her front rack (Tubus Swing) was no longer produced, so she had to keep getting it repaired since she could no longer replace it.
Started in S Africa, went up to Europe, then Asia, down to Australia, back to Asia and China, then to N America where I met her.