Book of Velocipedes, chapter 43, paragraph 6, section c:
For the first fixed gear ride of the, thou shall pick a pleasant day on a very nice road with some good company. Thou shall ride and it shall be a good ride.
And it goes on to say...
And Rick shall suffer greatly if he chooses to ride more than 50 miles for the first fixed gear ride. 25 will be a little short, 35 will fine, 45 might be pushing it, but ride more and thou shalt suffer greatly on the second day.