The Broken Pipes is an obstacle, firstly introduced as the third obstacle on American Ninja Warrior 9 in Kansas City. It consisted of two spinning logs and a small spring-loaded circle (sometimes referred as the dancing stone or the bobble head) placed between the logs. Competitors must run across a log which spun on an axis, and must jump to the other log which also spun in an axis. Once the competitors reached the second log, they had to run across it and continue to the landing mats in order to clear it. To make it more harder, the second log is placed slightly on the right, potentially throwing competitors off due to vision misjudgment.
The Broken Pipes was one of the most brutal obstacles on American Ninja Warrior 9. Many competitors were either thrown off from tripping on the bobbing spring in the middle. To avoid a misstep, some competitors tried to cautiously ram into the spring, and then continued sprinting across the second log. Competitors would not be disqualified if they touched the obstacle with hands (either the logs or the spring). During Kansas City qualifiers, 33 competitors fell on this obstacle, with many being notable competitors like Adam Arnold, Jimmy Choi, Christopher Lange and Cassie Craig. Even some competitors that completed it, such as Lance Pekus, were barely able to get past it. In Pekus' case, he made an incredible save at the end when his foot almost tapped the water.
It was just as deadly during Kansas City finals, with eight more competitors fell on this obstacle. By complete coincidence, it proved to be fatal for the "Windy City Warriors" (a group of competitors, composing of Brandon Mears, Ethan Swanson, Dan Polizzi, and Tyler Yamauchi), with only Tyler Yamauchi could get past this obstacle out of the four. It was also notable that this obstacle led to the second time, neither of the "Towers of Power" (Brandon Mears and Dan Polizzi) advanced to Las Vegas national finals, behind the Salmon Ladder during American Ninja Warrior 5's Baltimore finals.
- Its function is quite similar to the Spinning Log and the Danchigaubou.
- The Broken Pipes shared several similarities to the Snake Crossing from American Ninja Warrior 7's Pittsburgh qualifying course:
- Both are balance obstacles that utilized some sort of balance object midway through (Snake Crossing used three dancing stones at the start, midway, and end of the obstacle, while the Broken Pipes used a spring-loaded circle).
- Both have two balance platforms, with the second one slightly relocated.
- Both had only one competitor (Luciano Acuna Jr. with Snake Crossing, and Devin Harrelson with the Broken Pipes) who did not attempt it, with both of them fell at the first obstacle respectively (Luciano Acuna Jr. on the Quintuple Steps, and Devin Harrelson on the Floating Steps).
- Both were on a city finals course that also used the Floating Monkey Bars as the eighth obstacle.
- The Broken Pipes had a similar knockout rate with the Log Runner from American Ninja Warrior 8's Oklahoma City qualifying course (whether during city qualifiers or city finals). However, several female competitors could get past the Broken Pipes (e.g. Maggi Thorne and Sarah Schoback), while no female competitor could get past the Log Runner in Oklahoma City. Both were also attempted by Lance Pekus (with him barely getting past the Broken Pipes, unlike with the Log Runner), as well as several other competitors who competed in Oklahoma City (e.g. Mitch VeDepo and Kyle Mendoza).