You See What Happens When You Challenge Me?

I have this problem when it comes to writing: I'm insanely competetive. And when someone challenges me to a word war (timed writing race), ain't nobody going to stop me.

That said, many word wars over the last two days have led to a complete 16,269 words. Yes, that is an uneven number. No, I'm not writing any more today.
I was going to stop at 15,000, but what can I say? Word War!
During these word wars. Marie Wench, my main character, has sailed across an ocean. She's met her twin brother face to face for the first time in their lives.
And she's still alive. For the moment.

What about you? What are you insanely competitive about? What challenges you the most?