A marathon in New Caledonia was abruptly halted after the death of a 25-year-old runner and a series of serious medical emergencies during the event. The runner, participating in the half marathon, collapsed just a few meters from the first aid tent after crossing the finish line. He was immediately attended to but suffered a cardiac arrest and underwent over 30 minutes of cardiopulmonary resuscitation (CPR) before being pronounced dead. This tragic incident, combined with other medical emergencies, led to the cancellation of the race. The marathon took place on Sunday, September 6, in Noumea, and was interrupted due to an unusual and concentrated series of health issues among participants. According to Jérôme Troyat, the event organizer and president of the New Caledonia athletics league, eight runners experienced serious medical problems within about 45 minutes—a situation described as "completely unique" in the 43-year history of the event. Among these cases, four participants were evacuated to Médipôle, a local hospital, according to Lieutenant Colonel Géraldine Bourgoin, director of fire and rescue services in Noumea. The high number of emergencies overwhelmed the available medical resources, prompting the decision to stop the race. This decision was made after discussions between the event organizers and the mayor of Noumea. The exact cause of the unusual concentration of medical emergencies remains unclear. Lieutenant Colonel Bourgoin suggested that the situation was "multifactorial," meaning it likely involved multiple contributing factors. Heat was mentioned as a possible influence, but the organizer, Jérôme Troyat, noted that he did not perceive the weather as particularly extreme. He also emphasized that those affected were athletes, suggesting their physical condition might have played a role. The event had approximately 1,525 participants across its various races. Authorities have launched an investigation into the young man's death. The Noumea prosecutor's office confirmed that an inquiry has been initiated, according to a statement from public prosecutor Yves Dupas. Medical and legal experts will now work to determine the precise cause of the runner's death and the broader circumstances surrounding the series of medical incidents. The marathon's organizers have expressed their condolences and are cooperating with the ongoing investigation.