 Although entrants have registered on a first @-@ come first @-@ served basis and elite runners have an extended deadline , numerous official charities have additional late registration rights to award . The 2007 event had 85 charity partners . The 2006 event raised US $ 9 @.@ 2 million for charity . Charity fundraising is now closely intertwined with the event as the runners now raise money for research , aid the suffering and heighten public awareness of different causes . The marathon offers all registrants the opportunity to sign up to run with a charity partner . The marathon recognizes four levels of charities based on the number of participants recruited . The Leukemia & Lymphoma Society required participants to raise $ 1 @,@ 400 to be a team member in 2004 . Children 's Memorial Hospital has a $ 500 requirement . This program has existed since 2001 . 2013 marked the first year ever ( since data was available in 2002 ) that the total number of charities had dropped , however the number of participants and the amount of funds raised continued to climb . 
