With most Tough Mudder competitions, the course — outside of the obstacles — usually is dry at the start and gets progressively muddier as the waves of athletes make their way through the course.

GILFORD - Dr. Barry Chapin has run a few marathons in his life, but he'd never participated in an obstacle endurance run, nor had he ever run through a trap of wires radiating 10,000 volts hanging ...

SAN FRANCISCO (KGO) -- A health advisory has been issued for those who competed in the popular Tough Mudder obstacle race at Sonoma Raceway last weekend, a race that has participants crawling through ...