The star of Biggest Loser: Season 7, Tara Costa lost 155 pounds before undertaking the 2011 IRONMAN World Championship. She finished with a decent time of 13:56, but stirred up controversy along the way. Many triathlon purists believed the IRONMAN World Championship should be open only to those who earn it, not to those who get a charity slot, like Costa did. At the very least, she was an inspiration to other athletes who battle with weight issues.