Newby - Fraser continued to dominate the women 's race .
Newby - Fraser became the first woman ever to finish the 140.6 - mile race in under 9 hours in 1992 , setting a record time of 8 : 55 : 28 .
Newby - Fraser continued to dominate the women 's race , and became the first woman ever to finish the 140.6 - mile race in under 9 hours in 1992 , setting a record time of 8 : 55 : 28 .