The 46-year-old has decided to run the 26-mile road race Nov 3 to support her actor friend Sean Penn, reports femalefirst.co.uk.
She hopes to raise USD 500,000 for Penn's non-profit organisation J/P Haitian Relief Organisation that is dedicated to saving lives and bringing sustainable programmes to the Haitian people following the devastating earthquake of 2010.
Anderson took to Twitter to share the news.
"I'm running the New York Marathon this year and raising funds for the J/P Haitian Relief Organisation," she tweeted.
Among the other celebrities planning to complete the run are supermodel Christy Turlington and reality TV star Bill Rancic.
--IANS (Posted on 30-09-2013)