Dozens of people who took part at a Tough Mudder event at Sonoma Raceway last year are suing organizers, saying they were infected with a dangerous bacteria while participating.

Tough Mudder involves an obstacle course covered in mud. Dozens of participants said they suffered skin infections following the competition at Sonoma Raceway in August 2023.

A lawsuit was filed in Sonoma County Court on Tuesday after thousands of participants of the Tough Mudder race in 2023 were sickened by bacteria in the water.

It’s been a year since participants in a Tough Mudder Race in Sonoma County. They reported having rashes all over their bodies because of water on the course. At the time, the Sonoma County Health Department said they were dealing with less than 10 patients.

Goldsmith was among the 5,000 people who had just taken part in the 2023 Tough Mudder race at Sonoma Raceway, a popular 5K to 15K event and obstacle course that has been held annually since 2010 with iterations in 25 cities across the country.