The rUNDEAD is a 5k trail run. What are the obstacles on this run?... zombies. Each runner will start off with a flag belt and three flags. These flags represent runner lifelines. Zombies throughout the course will be attempting to take these one at a time. If a runner finishes the race with at least one flag, they’ve survived, but if zombies have taken all of a runner’s flags, while the runner can still complete the race, they will not be eligible for awards.