Early May Heatwave in France Causes Fatalities and Hospitalizations During Running Events

On Sunday, May 24, 2026, a severe and unprecedented early heatwave in France led to multiple health emergencies during various running events, with one fatality reported in Paris and numerous hospitalizations in other regions. The extreme heat, atypical for May, forced interruptions and cancellations of several races as temperatures soared above 30°C.

In Paris, during the 11th edition of the Pyrénéenne race held in the 20th arrondissement, a man in his fifties suffered cardiac arrest and respiratory failure around 9:30 AM. Despite emergency response efforts, the participant died. Paris firefighters indicated the heatwave may have contributed to the fatal incident. Paris Mayor Emmanuel Grégoire expressed his sorrow, stating, “This was supposed to be a festive moment, but we are engulfed in immense sadness.” The event drew 1,650 registered runners.

Further health crises unfolded in Maisons-Alfort, where ten runners were hospitalized in critical condition during the semi-marathon La Maisonnaise, with six others experiencing milder symptoms. Mayor Romain Maria voiced concern over the rising severity of medical incidents linked to heat, suggesting that some participants may be unprepared for such extreme conditions. In Menton, the 40th Ronde des Plages 10 km race saw several runners suffer from heat-related malaise, causing local authorities to cancel subsequent events to protect participants.

In the western part of France, 13 departments were placed under a yellow heatwave alert starting May 25, with expected temperatures reaching up to 36°C. This is the earliest activation of such alerts since 2004. Experts link this heatwave to a "heat dome" phenomenon and highlight the increasing frequency of extreme weather events due to climate change.

The current heatwave led to poor air quality in Île-de-France, with elevated ozone levels reported. Météo-France has issued warnings across affected regions, urging caution for outdoor activities. The disruption of running events nationwide underscores concerns for public health and safety amid rising temperatures in France.