The Zombie Mud Run finally gives people an incentive to exercise—the survival of their species. Amid forested trails, muddy creeks, and challenging obstacles, participants of this post-apocalyptic 5K face off to either save the human race or feast on human flesh, respectively. Clad in a flag-football belt with three flags that represent their brains, heart, and entrails, human participants race to get themselves and their fellow living athletes to the Green Zone, which grants salvation in the form of food, water, music, and beer. Meanwhile, costumed zombies—each of whom are either slow-moving “creepers” or fast-moving “leapers”—positioned along the race course pursue the humans to devour their organs or simply return that contact lens they dropped a mile ago. Human runners who reach the Green Zone with at least one of their flags survive.