American boxer and trainer, Cara Castronuova, has an estimated net worth of $1.3 million. A certified trainer and two-time Golden Gloves winner , who was once ranked nationally by USA Boxing, Cara Castronuova is a consummate athlete whose passion for boxing and being fit began very early in her childhood. She was born and raised in Elmont, New York. Cara Castronuova is best known as one of the newest trainers on the television show The Biggest Loser. She graduated from Hofstra University with a Bachelor of Arts degree in communications.