Runner Yoo Jiwon Dies After Seoul Half-Marathon Collapse

Yoo Jiwon, a 25-year-old runner and graduate researcher, died after collapsing near the finish of the Seoul Race half-marathon on October 11, organizers said. She collapsed at about 8:49 a.m. near the 20.6-kilometer mark, roughly 500 meters from the finish, and later died after receiving emergency treatment and being taken to a medical facility. The Seoul Race organizing committee confirmed her death in a statement on October 12. It said responders provided immediate first aid and transported her by ambulance for treatment. The committee offered condolences to Yoo’s family and said it would examine the incident and take necessary follow-up measures. The cause of Yoo’s collapse and death has not been publicly disclosed. The supplied reports provide no medical finding, and organizers have not announced the outcome of their examination. Yoo was a graduate researcher at the Korea Advanced Institute of Science and Technology, known as KAIST, where she studied artificial-intelligence semiconductors. She also shared her running training and race results online. Reports identify her as a running content creator whose posts documented her progress in the sport.