California health officials have issued an advisory after several people who competed in a Tough Mudder run and obstacle course competition last weekend fell ill with as-yet unexplained symptoms.

When Nicole Villagran signed up to do her first Tough Mudder course, she thought she’d be getting an entertaining, if messy, workout. She got that — and much more. Villagran has spent the last ...

SAN FRANCISCO (KGO) -- Last year, hundreds of people were sickened after Tough Mudder race held at the Sonoma Raceway. It's an obstacle course racetrack where people often crawl through mud.

SONOMA COUNTY, Calif. (KRON) — 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.

SONOMA, Calif. - One man filed a lawsuit against Spartan Race, Inc, the company responsible for the Tough Mudder race, after hundreds of people reported getting sick at its race in Sonoma County ...

Hundreds of people who participated in a recent Tough Mudder event—a very muddy obstacle course race—held in Sonoma, California, have fallen ill with pustular rashes, lesions, fever ...

An outbreak of illnesses after a Tough Mudder race in Sonoma County, California, this month has reached about 300 cases, the county estimated Wednesday. The Sonoma County Department of Health ...

More than 100 athletes who participated last weekend in the Tough Mudder obstacle course race at Sonoma Raceway have since reported experiencing fevers, vomiting, muscle pain and a distinct rash that ...

After participating in a recent Tough Mudder obstacle course challenge, at least 22 people have reported developing odd rashes and fevers. When you purchase through links on our site, we may earn ...

Colleagues from the company’s Thames Valley region attended a spring ball, climbed Snowdon, tackled a Tough Mudder event, and ...