5, never participated in official sanctioned cycling event.
Some 75 "practice" crits, 40 "practice" TTs over two seasons - I hang with the 4s and 5s, 'k? Some of the 3s don't TT very well, hence they get crushed in TT - same guys who disappear on long rides, but "hide" and sprint well.
I'm 53, lots of room for improvement, but never will rely on "sprint."