Tracy Abrom of Lewisville is about to complete a major milestone as a runner. On March 2, Abrom will run in the Tokyo Marathon, her final race to complete the six World Marathon Majors – New York, Chicago, Boston, London, Berlin and Tokyo. Her first marathon was in October 2013, and she has already completed 57 marathons, including at least one in all 50 U.S. states. She said she may set her sights next on completing a marathon on all seven continents, since she will only need four more after Tokyo.