Marileidy Paulino of the Dominican Republic won the women's 400 meters at the 2026 Paris Diamond League meeting on June 30, 2026, with a time of 48.48 seconds. This performance set a new meet record for the event.
Paulino, the reigning Olympic and world champion in the 400 meters, delivered one of the fastest times of her career. The time of 48.48 seconds is the second-fastest of her career, behind only her personal best of 48.17 seconds set at the 2024 Olympics.
The race took place at the Stade Sébastien Charléty in Paris. Paulino's victory continues her dominant season in the Diamond League series.