Was registering for my first 5k and put my gender down as NB. Then I found out it’s not just basic info; there’s like separate awards for men, women and nonbinary people. Been identifying as NB for a couple of years low-key irl, but I usually just pass as male out of convenience. I didn’t know how it was going to so official.
Anyway, I’m going to be running as an official representative of the secret DLC gender that you only get after double prestiging a base game gender 
by accidentally joining this particular gender segregated race, you have increased the odds almost into infinity that you won’t be racing against a-holes.
good luck!!