I ran tonight...in the Fargo 5k! And, I PR'd at 35:54...11:10 minute miles...better then I do running on the treadmill!
I learned a few things though. Running fast does no good if you are not trained for it. I was running to keep up with a friend and I ended up getting a nasty side stitch that lasted the rest of the race.
In addition, races at night are just not as nice as morning ones.
That being said, I ran the whole thing, faster then I ever have, and I am motivated to run an even longer race!