Eight runners were hospitalised after suffering heat-related illnesses during a marathon near South Korea's Demilitarized Zone with North Korea, where temperatures reached 30C (86F) and close to 30C. The race took place in Paju, South Korea, which is considered a significant area that borders North Korea. The heat spike was likely caused by a temporary weather system drawing warm air northwards, a pattern seen during spring. Authorities have urged people to monitor for signs of heatstroke and to stop exercising immediately if they occur.