Aside from the costume, I'm really looking forward to that race. My first race since I started running was a 10k (in January). I had only run 6 or 7 miles once- the week before the race. So that PR has stared at me every time I pull up my blog and it needs to be replaced! I'm hoping to seriously smash it. I'm sure I'll write about it later this week, though.
And I'm probably going to race that 5k on Monday. I don't think I can resist the temptation of being at a race with the kids and not running myself.