The singer, who gave birth to twins Max and Emme last January, has been intensively training for the event, which includes running, biking and swimming, reports FemaleFirst.
The star explained, "If I have to crawl across that finish line, I am going to. I keep telling myself that when I’m training, ‘This is for charity. Your kids are going to know about this. Don’t embarrass the family! Get it done, Lopez!’"
The 39-year-old mother said that she is not only participating in the triathlon for a good cause, but also for her children.