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13.1 Marathon™ is the Inaugural series of themed half marathons serving some of America's top running communities with a stand-alone half marathon for locals to embrace and visitors to experience.

Fort Lauderdale
November 15, 2009
 Los Angeles
January 10, 2010
 Miami Beach
March 7, 2010
 New York
April 3, 2010
 Chicago
June 13, 2010
 Boston
June 27, 2010		 Minneapolis
August 22, 2010
 Atlanta
October 3, 2010
13.1 Fort Lauderdale presented by Blue Cross and Blue Shield of Florida  13.1 Los Angeles benefiting World Vision 13.1 Miami Beach 13.1 New York benefiting World Vision  13.1 Chicago  Coming Soon... 13.1 Boston to benefit the Crohn's & Colitis Foundation of America  13.1 Minneapolis benefiting World Vision

Inaugural 13.1 Atlanta