[{"Bold_text": "noun", "List Items": ["a footrace or wheelchair race wheelchair raceover a course measuring 26 miles 385 yards (42 kilometers 195 meters).", "any long-distance race.", "any contest, event, or the like, of great, or greater than normal, length or duration or requiring exceptional endurance:a dance marathon;a sales marathon."]}, {"Bold_text": "noun", "List Items": ["a plain in SE Greece, in Attica: the Athenians defeated the Persians here 490 b.c.", "an village that is near this plain.", "Classical Mythology.a son of Epopeus and the father of Corinthus."]}]