Well, I didn't finish.
In fact, I only made it 2 miles, and it was at that early point that I knew the pain in my right knee wasn't going to relent.
I felt good as I stood at the start line, and was excited for the race ahead of me, but a half mile into it, my knee began to ache and I had to stop and stretch. At mile 1, the ache had turned into a sharp, shooting pain and I had already stopped and stretched several times. I know there are people who are able to work through pain and see to getting the job done, and for a little bit, I thought I could be one of those people, but by mile 2, I had already stopped a handful of times, and the pain was not subsiding. I knew then I couldn't go the next 11 miles.
So, I turned around and walked back.
My knee dully ached as I walked back to the parking garage where my car was waiting for me, and after awhile even that subsided. I knew, however, that if I started jogging again that the pain would resume. It was over for the day, and for the race.
I am deeply disappointed that I didn't finish; I didn't even get past mile 2. And, I guess this means I need to see a doctor, because ignoring this problem has not been enough to make it go away.