U.S. & World
Flanagan is a versatile distance runner. She broke the American outdoor 10,000m record, as well as the American indoor 3000m and 5000m records. She also ran the fastest time by an American woman at the Boston Marathon.
In June 2016, at 34, Flanagan won the Suja Rock 'n' Roll San Diego Half Marathon with her personal best in the half marathon which was also the second-fastest half marathon run by an American this year.