I did a practice time trial last night in preparation for my race on Sunday (which I'm nervous about since I just don't know what to expect). I managed to meet my goal, averaging over 21 mph for the entire 10K distance. It's good because now I know that I can maintain that, which is something I wasn't sure of before. I also put together a playlist for my iPod, which should help me stay focused/ distracted/ motivated during the ride. I'm pretty sure you can wear headphones for these races. It looks like people in the pictures have them on, but we'll see. I find out my start time this afternoon.