Business Insider spoke with CEO and founder of Tough Mudder Will Dean, about why people repeatedly come back to tackle the famous obstacle course. He said: "We are a tribe, a community.

multiple chest-high mud pits that you have to climb in and out of. Dotted along the course were fun signs detailing the obstacles or spurring the contestants on. One read, "Leave Dignity Here.” ...

Be prepared to push yourself out of your comfort zone this October for the ultimate muddy endurance challenge. Tough Mudder, ...

You can take on other obstacles in life." Tough Mudder has recently launched its newest venture, Tough Mudder X. It is targetted at elite athletes who take on a one-mile course, with some of the ...