Overview:The Semifinals begin in Los Angeles where the competing ninjas face up to six challenging obstacles and race head to head for a spot in the National Finals.
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First Air Date: Dec 12, 2009Last Air date: Sep 01, 2025Season: 17 SeasonEpisode: 253 EpisodeRuntime: 60:14 minutesQuality: HDIMDb: 4.1 / 10 by 70 usersPopularity: 6.7962Language: en
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