Six CNN viewers were selected to be a part of the Fit Nation Triathlon Challenge program. Follow the "6-pack" on Twitter and Facebook as they train to race the Nautica Malibu Triathlon with Dr. Sanjay Gupta on September 8.
Photographs by John Nowak/CNN | *Data courtesy of Garmin Connect. Workout data logged by each of the participants. Distance is tracked by GPS; low or '0' miles may indicate an activity performed on a treadmill or stationary bike.