Olympic Marathon Swim Test Run Is Canceled Over Water Quality Concerns for Seine River

The levels of fecal bacteria E. coli and enterococci were within acceptable levels yesterday.

Martin Bureau/AP
Athletes jump into the water to compete in the swimming race in the Seine river, during the mixed relay triathlon, at the 2024 Olympic Games, at Paris, France, Aug. 5, 2024. Martin Bureau/AP

PARIS — A test run meant to allow Olympic athletes to familiarize themselves with the marathon swimming course in the Seine River was canceled today over concerns about water quality in the Paris waterway.

A Paris 2024 spokeswoman, Anne Descamps, confirmed that World Aquatics made the decision to cancel the exercise.

The cancellation comes a day after the triathlon mixed relay event was held in the river that runs through the center of the French capital.

The portion of the Seine in which the triathletes swam is much shorter than the course for the marathon swim, which has races scheduled for Thursday and Friday.

World Triathlon released data today showing that when the triathletes swam Monday, the levels of fecal bacteria E. coli and enterococci were within acceptable levels.


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