Roberta Louise "Bobbi" Gibb (born November 2, 1942 in Cambridge, Massachusetts) is the first woman to have run the entire Boston Marathon (1966).
She is recognized by the Boston Athletic Association as the pre-sanctioned era women’s winner in 1966, 1967, and 1968.
At the Boston Marathon, the pre-sanctioned era comprised the years from 1966 through 1971, when women, who were banned from entering the Men's Division Race because of their gender, ran and finished the race.
In 1996 the B.A.A.
retroactively recognized as champions the women who finished first in the Pioneer Women's Division Marathon for the years 1966–1971.
Gibb’s run in 1966 challenged prevalent prejudices and misconceptions about women's athletic capabilities.
In 1967, she finished nearly an hour ahead of Kathrine Switzer, who had obtained an invalid number in the Men's Division Race, which threatened the accreditation of the race and angered officials, who tried to remove the number.
In 1968 Gibb finished first among five women that ran the marathon unregistered.
It was not until late 1971, pursuant to a petition to the Amateur Athletic Union by Nina Kuscsik, that the AAU changed its rules and began to sanction women's division marathons.
Kuscsik won the initial AAU-sanctioned women's division race at Boston in 1972.