Two complete strangers participating in the Pittsburgh Marathon went viral after they helped support one another to the finish line with a quiet act of encouragement.
A statement from Guinness World Records explained that officials didn't want to mistake her for a doctor.
A 48-year-old man has made history as the first blind person to complete the New York City Half Marathon, with the assistance of three guide dogs.
Andy Airey's late daughter signed up for the run. He took her place after her death.