http://f800riders.org/forum/showthread.php/280017-125-446-miles-and-off-to-a-new-home
I know NT owners won't be excited about this, but I was. The owner put over 125,000 miles on his 2013 F800GT and traded it in on a 2016 F800GT. It says something for the reliability of the bike, and also says a lot for the bike in that he bought another of the same thing.
I was also interested in what "broke" on the bike during that time. It sounds like it was pretty reliable. Here's what he said in a thread at 100,000 miles:
If you're interested in how he got so many miles in such a short time, the answer is simple. He had a 1000 mile per week commute. Another thing I think is significant is he put the miles on in England. It's not a dry warm climate that would be easier on a bike, but much like the Puget Sound area...warm in the summer, but rainy and colder for the rest of the year.
Chris