@CNN: With more than 230 obstacles spread over a single 20-mile loop, the Rat Race Dirty Weekend purports to be the largest obstacle course race in the world. https://t.co/MtF0h6ndyZ https://t.co/WAMT33cr0y

@CNN: With more than 230 obstacles spread over a single 20-mile loop, the Rat Race Dirty Weekend purports to be the largest obstacle course race in the world. https://t.co/MtF0h6ndyZ https://t.co/WAMT33cr0y