Just out of curiosity, what do you consider fast? I use runtastic pro when I run and when I was done it said that I ran 2.04 miles in 30.18 minutes. This includes a 5 min warm up (walking) then I sprint as fast as I can. This is outdoor running. I would sprint one block then walk another and so on. Finally I would do a cool down for 5 min so this all in matter of that 30.18 minutes.
I ideally would like to improve my sprint speed so I just wanted to know if i'm too slow.