DRIVEN: Alexa Efraimson (Trailer)

After breaking Mary Cain's national high school indoor 3k record (9:00.16), and finishing 6th in the 1,500m at World Juniors this past July, Alexa Efraimson was ready for a new challenge. The 17-year-old decided to turn pro in August. As the latest distance star to skip college in favor of a pro career, the pressure is on Efraimson to live up to the massive hype. Watch the full series on FloTrack HERE: http://bit.ly/1KTx8lj