A runner tries to escape with his life as zombies pursue him during the Run for Your Lives race. The 5K course is littered with obstacles — and the undead. HGL hide caption itoggle caption HGL The Two-Way To Some Runners, Zombies Are A Killer Motivator September 4, 2012 Some people run for charity; some run for their health. And some run to escape the ravenous brain-eating zombies who chase them. The popularity of Run for Your Lives, a "zombie-infested 5K obstacle race," has surprised even its organizers.