It depends on how well you go over the hurdles. If you don’t have good form and are jumping over the hurdles rather than running through them, you’re time isn’t going to be so good. If you have decent form and you run through and attack the hurdles, your time is going to be better. When you do the hurdles, just remember to focus on sprinting and not on going over the hurdles. There really is no way to tell ahead of time what your time is going to be though.