Fleming died Wednesday of an apparent heart attack while coaching a middle school team at a meet in Verona, New Jersey, the Montclair Kimberley Academy said in a statement Thursday. New York Road Runners, organizer of the city's 26.2-mile event, called Fleming an "iconic figure" in the race's history. Fleming lived in Bloomfield, New Jersey, and began his competitive distance running in his junior year at the town's high school. "Tom's love for his sport, love for his athletes and love for teaching the next generation of runners was truly remarkable," said Todd Smith, Montclair Kimberley's athletic director.