Brookfield Central junior Kyenret Rinkam has already proven she is the fastest sprinter in the state of Wisconsin and she has big goals ahead of her.Rinkam said her path to the track started in seventh grade. "Okay, when I was in seventh grade, I just to do cross country. My cross country coach noticed that I ran really fast towards the end of the race. So he suggested that I should do track and field. So I ended up signing up for the 100 and 10…