Family of runner who died at Seoul marathon seeks witnesses

The family of Yu Ji-won, a KAIST graduate student and running influencer who died during a marathon race, is searching for witnesses to the incident.

Yu collapsed about 500 meters from the finish line at the 2026 Seoul Race half-marathon, held in central Seoul on Oct. 11, and was transported to a hospital, where Yu later died.

According to the online community Ppomppu, a post titled "The family of the late athlete Yu Ji-won is looking for witnesses" was uploaded Oct. 31.

The author identified herself as Yu's aunt.

"My niece suddenly collapsed about 500 meters before reaching the finish line and ultimately passed away," she wrote. "We want to accurately determine the circumstances of the accident, the emergency response at the scene, and what happened before and after the ambulance arrived."

She continued: "Were you near the finish line at the time, or did you directly witness the moment my niece collapsed, the on-site emergency response, or the arrival and departure of the ambulance? Anyone who took photos or video at the scene, or who has any relevant information, is also welcome to reach out."

"Even a small memory or a minor piece of information could be a very valuable clue for our family," she said. "This is a request to establish the accurate facts of the accident, and we will carefully protect the identity and personal information of anyone who comes forward."

The aunt also shared her email address for tips and inquiries.

Shortly after the incident, the 2026 Seoul Race organizing committee issued an official statement saying: "Emergency first aid was administered on site before the patient was transported by ambulance to a medical facility for treatment, but sadly passed away. The organizing committee will closely review all related matters and continue with any necessary follow-up measures."

Meanwhile, marathon Olympic gold medalist Hwang Young-jo said on his YouTube channel on Oct. 13 that the causes of fatal accidents at marathon events include runners pushing too hard for times and rankings, as well as insufficient preparation by organizers. "There should be eight to ten ambulances stationed as a basic requirement so that emergency treatment can be administered immediately," Hwang said. "Runners need to know their own bodies, but organizers also need to prepare far more thoroughly when it comes to safety."