Did this the day after my 59th birthday. I didn't know if I had it in me, but somehow I managed to ride my 36er unicycle 150 miles on 1/16/2015, in just under 16 hours! I also filmed with a handheld gopro *while* riding! A most incredible experience I won't soon forget! https://www.youtube.com/watch?v=vedyVUZDzfU