"Survive the Madness! 5th Annual Mad Backyard Ultra" Test your limits at the 5th Annual Mad Backyard Ultra, a qualifying event for The Big Dog's Backyard Ultra. This grueling endurance race challenges you to complete a 4.1667-mile loop every hour – until only one competitor remains. Each loop has a strict one-hour time limit. Finish within the hour to advance to the next loop. Fail to finish, and you're out of the race. It's a relentless test of physical and mental endurance. Can you conquer the MAD Backyard Ultra?"