Practice. A LOT. also, on the last lap try to run as fast as your body allows you. But dont go TO hard. I got 7:30 for my mile. Im almost 11 an I am a girl.

hope this helps! :)

My mile time is 3:30

Let's see. My mile time is 4:56. I started our 3 weeks ago with a mile time of 6:30ish. Now, if you want to do distance (such as the mile) it is best to over-run. What I did, is I started running a mile a day outside of practice. After the first few days, I did 2 miles out of practice. Now I do three miles. When you do more miles than what's required, you're adding to your endurance. Eventually a mile will be absolutely nothing to you. Remember proper form, and make your strides longer. Never let your body give in and you should be on the right track. Just making your stride longer could probably get you down to 6:30 if you can keep it up throughout the mile.