Super Human: Picking Up Speed

Natalie has never been a fast runner. She's only on the track team because her sister, a varsity runner, put in a good word with the coach. So Natalie's shocked when her speed suddenly increases on her sixteenth birthday. Soon she can run faster than humanly possible! But the more races she wins, the more arrogant she becomes. When her new attitude takes a toll on her relationship with her best friend and her sister, Natalie must decide if the super speed is really worth it.