Leryn Franco specializes in the javelin throw and became an Internet sensation during the 2008 Beijing Olympics. Her personal best throw is 57.77 metres, achieved in June 2012 in Barquisimeto.
Franco appeared in the 2011 Sports Illustrated Swimsuit Issue.
She has competed in several beauty pageants. In 2006 she was runner-up Miss Universo Paraguay 2006. She participated in the Miss Bikini of the Universe pageant. Franco has her own calendar, which was photographed in 2007 by Martin Crespo.