TV American Ninja Warrior - Season 17 Episode 9 : Semifinals 3 American Ninja Warrior - Season 17 Episode 9 : Semifinals 3 6.849/10 by 73 users The semifinals conclude in Las Vegas where the ninjas take on a longer course featuring 10 iconic obstacles from the past; the fastest advance to the national finals and compete in head-to-head races. Details Casts Posters Images Title American Ninja Warrior - Season 17 Episode 9 : Semifinals 3 Alternative Titles 美国极限体能王 First Air Date 2009-12-12 Last Air Date 2025-09-01 Number of Episodes 257 Number of Seasons 18 Genres Reality, Networks NBC, G4, Casts Matt Iseman, Akbar Gbaja-Biamila Plot Keywords , Self - Host Matt Iseman Self - Host Akbar Gbaja-Biamila Episodes List American Ninja Warrior Season 17 :Episode 1 Qualifiers 1 Qualifiers 1 2025-06-02 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 2 Qualifiers 2 Qualifiers 2 2025-06-09 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 3 Qualifiers 3 Qualifiers 3 2025-06-16 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 4 Qualifiers 4 Qualifiers 4 2025-06-23 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 5 Qualifiers 5 Qualifiers 5 2025-06-30 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 6 Qualifiers 6 Qualifiers 6 2025-07-07 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 7 Semifinals 1 Semifinals 1 2025-07-14 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 8 Semifinals 2 Semifinals 2 2025-07-21 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 9 Semifinals 3 Semifinals 3 2025-07-28 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 10 Finals 1 Finals 1 2025-08-04 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 11 Finals 2 Finals 2 2025-08-11 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 12 Finals 3 Finals 3 2025-08-18 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 13 Finals 4 Finals 4 2025-08-25 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those... American Ninja Warrior Season 17 :Episode 14 Women's Special Episode Women's Special Episode 2025-09-01 Follow competitors as they tackle a series of challenging obstacle courses in both city qualifying and city finals rounds across the country. Those...