Flanagan, who retired from professional running in 2019, set the lofty goal after saying “I have fallen back in love” with the sport.READ MORE: 'He Embraced This City': Fans Celebrate David Ortiz's Election To Hall Of Fame
She finished the Boston Marathon in a time of 2:40:34 just one day after completing the Chicago Marathon in a time of 2:46:39.READ MORE: Tatum, Brown Lead Celtics In 128-75 Rout Over Kings
The Marblehead native has already completed marathons in Berlin and London in the last several weeks.
That leaves here with a virtual Tokyo marathon set for October 17, and the New York City Marathon on November 7, which would complete the feat.MORE NEWS: Keller: Gov. Baker's Final State Of The Commonwealth Was A Victory Lap
Flanagan is a four-time Boston Marathon elite runner. In 2017, she became the first American woman to win the New York City Marathon since 1977.