Jon Stewart is a construction manager who first competed in American Ninja Warrior 5. He is known by many for not only his age, but for his rock climbing experience as well.
During the city finals, he scaled the Warped Wall on his third try and continued to move past the next four obstacles. Ultimately, Stewart completed the course at 52 years old and was given the title as the oldest competitor to finish a city finals course.
Stewart had a huge crowd of supporters expecting him to do well in Vegas. However, he was one of the many to fail the Silk Slider.
Stewart returned in American Ninja Warrior 7, to which it was revealed that after such a performance last season, he almost was unable to come back due to a devastating collarbone injury. However, Stewart was one of the many competitors to finish the Kansas City Qualifying course. However, in the Finals, he fell on the 8th obstacle, the Flying Shelf Grab. Since the majority of competitors failed the next obstacle, the Body Prop, he couldn't get a shot at Vegas this time around.
In American Ninja Warrior 8, Jon Stewart once again scaled the Warped Wall and even broke a record this season for being the oldest athlete to finish Qualifying, now at 54 years of age. He was determined to finish the course like he did two seasons ago. Although he wasn't able to finish, Stewart made it to the 9th obstacle, the Window Hang, and placed 5th overall in the finals, moving on to the Vegas once again. He was the second to last competitor to run the Oklahoma City Finals and notably knocked out David Campbell out of the top 15 from his success on the course.
In Vegas, he was one of many to fail to fail the Propeller Bar.
In American Ninja Warrior 10, he competed in Dallas, and got revenge on the Bouncing Spider, and once again broke his own record for being oldest athlete to finish Qualifying, at 56 years old, placing 13th.
In the city finals, his run was digested but it was shown that he fell on the Nail Clipper and just missed out on advancing to the national finals as he placed 16th overall at the end of the night.
He competed in Tacoma during American Ninja Warrior 11, officially announcing that this his final season competing.
At 57 years of age now, he was hoping to make an outstanding final run. However, his last season ended in a major disappointment, as he went out on just the second obstacle, the Lunatic Ledges, after being stuck on the obstacle for over three minutes before a failed last-ditch leap.
|6||Failed Silk Slider (First Stage)|
|8||Failed Propeller Bar (First Stage)|