The athlete who broke the women's marathon world record in 2019 is Brigid Kosgei. She achieved this remarkable feat at the Chicago Marathon, completing the race in a time of 2:14:04. Her performance shattered the previous record held by Paula Radcliffe for 16 years. Kosgei's victory exemplifies the advancements in training methodologies, nutrition, and overall athletic preparation that have evolved in recent years. Her record-setting achievement has inspired many aspiring distance runners and highlighted the increasing competitiveness of women's long-distance running events.