Tirop, a two-time 10,000m world bronze medalist, won the 10km event in a time of 30 minutes and one second, finishing ahead of Sheila Chepkirui and cutting 28 seconds the record previously set by Morocco Asmae Leghzaoui 19 years ago.
“I am very happy to have broken the world record,” said Tirop. “I felt that the pace was good and Sheila helped me a lot. The course was also very good.”
Chepkirui finished with a time of 30:17, also within the previous record time, but he was no match for Tirop, who escaped two kilometers from the finish and launched himself to the goal.
In the 5km race, Teferi finished with a time of 14:30, beating the record of 14:44 set by Kenyan Beatrice Chepkoech.
“I’m so happy,” said Teferi, who finished sixth in the 5,000 meters at the Tokyo Olympics. “After the Olympics, I knew I was ready to chase this world record.”