Fat March is an American reality television series on the ABC network, based on the U.K. Channel Four series Too Big To Walk?. The British original followed a group of eight overweight people as they marched 500 miles over eight weeks, from the south coast of England to Edinburgh, Scotland, while the American version, premiering August 6, 2007 on ABC, focuses on twelve individuals walking from the starting line of the Boston Marathon, over 550 miles to Washington, D.C., for…