The 100 mile record has stood for over a quarter century, and is one of the toughest records in unicycling. It has had several attempts on it since Takayuki Koike (Japan) set the record in 1987, and still stands at 6hrs44min22s.
On the 9 July, Sam Wakeling and Roger Davies will be attempting the world record. Sam will be riding a geared 36″, while Roger will be attempting the record on an ungeared 36″.
Check out their website for updates: http://100.samwakeling.com/
And the RSU discussion
Good luck guys!