I ran my second 5k this morning. I was dreading it, but I am very glad I did it. I beat my last time by about four minutes, yay! I think I finished at 33:11 but I'll have to wait until they post the results to know for sure.
I did walk up a hill at the water station, and even walked a couple more short times later. Yet, one of my best times. I do think the adrenaline kicks in on race day.