Which events should you run if you're doing short distance?

If you are a full out sprinter who gets 11-12 seconds or less, do the 100m dash. If your times are 27-29 seconds, do the 200m dash. The 400 is a very competitive race and can be somewhat difficult depending on your competition. A great time would be 57 seconds-1:00 minute flat. (Keep in mind that these are times for a girl. Guys have much lower times.)