Participants of an 8.1-mile mud race held near Nice, France, on June 20, have reported symptoms including diarrhea, vomiting, stomach cramps, and fever, (ARS). As of June 26, of the sold-out event鈥檚 8,400 participants, more than 1,000 have complained of illness.
Race organizers for聽the Mud Day first on June 22. 鈥淸We] have immediately decided to make every effort to determine what could be causing stomach upset some competitors complain,鈥 the Mud Day said on its website.
The cause of the widespread sickness remains unclear, though that the racecourse shared space with the local equestrian center.