Runk: (n) A person who participates in mud runs, obstacle courses and adventure racing. These individuals are often characterized by a willingness to get dirty, excited by challenging themselves mentally and physically, and a desire to live life to its fullest.
Runk: (v) to participate in mud runs, obstacle courses and adventure racing. “Michelle had a crazy runking experience at the mud run for Halloween.”
Runk is a subset of the term Runkz: A close, online, sharing community of like-minded, slightly insane individuals who enjoy mud runs, obstacle course and adventure racing.