Ragen Chastain has already committed to Ironman Arizona 2016. The half-IM was only a stepping stone to this year's 140.6 mile race. You can check in at 6:00 PM Arizona time on November 20th at the IM website, searching for her name as a participant. I can guarantee you with absolute, physical certainty that she will not complete the 112-mile bike portion and will thereby earn her DNF. People have done the power figures. It's a done deal 9 months out and she doesn't know it yet.