I do not recommend signing up for a race two days prior. Last week that is exactly what I did. I wanted to get a race in before my next marathon in October and I knew another one through Lacrosse, WI would be beautiful. I finally bit the bullet and paid to $40 for a 10k. This was my first race where I went alone and knew no one else running! I realized when I was setting out my race outfit the night before that I completely forgot my garmin. I have never done a race without my watch. I was nervous that I would be lost without knowing my pace. My watch didn't work during the last leg of my Ragnar Chicago race and I ended up running at a 7:45 pace!