Hundreds of people who participated in a recent Tough Mudder event—a very muddy obstacle ... including a mud-soaked crawl under barbed wire, rope climbs over a muddy slope, a knee-deep mud ...

When Nicole Villagran signed up to do her first Tough Mudder course ... at the event on Aug. 20 were a mud-soaked “army crawl” under barbed wire, a swimming-pool-sized dugout of knee-deep ...

Tough Mudder events involve obstacle courses in which participants crawl through mud and overcome challenges such as climbing over logs or traversing rope courses. In a statement to McClatchy News ...

SONOMA COUNTY -- Authorities in Sonoma County are investigating the cause of illnesses associated with last weekend's Tough Mudder event, which took place at Sonoma Raceway and involved a muddy ...

Founded in 2009, Tough Mudder holds 5k, 10k and 15k races across the country in which participants are submerged in pits of muddy water, crawl through mud under barbed wire and scale muddy hills.