Random thoughts.

I don't have that much experience on the topic because my partner left me about 3 months after I started riding more seriously and longer distances, which was sometime in June, and my sex-life has been rather quiet since. :I

However: I did find that the time in the saddle made my girly parts tender and less interested in sex (while I could be - but my tissues maybe were not necessarily agreeing) and it seemed the other way around too: the saddle felt less comfortable after sex!! It was not a very big issue though because otherwise everything was great on that aspect. Tons of different activities can be fun after cycling (AND a shower)!!!

As for racing (which I haven't tried yet), I can easily imagine that sex (before) would give me more energy for riding hard and fast. After, I'd feel too aloof I guess (unless I won?? - very unlikely!!)

Exercise gives you lots of (natural) endorphins and like most drugs it can satisfy you to the point that you don't need to get "high" on something else (sex for example)...

I'm curious to read the other gal's opinion on this!!