Sixteen elite female ninjas compete on the world's toughest obstacle course with head-to-head races deciding this year's women's champion.

The finals conclude in Las Vegas where the nation's top ninjas go head-to-head in high-stakes, side-by-side races. A new bracket-style tournament will crown the next champion, earning them the grand prize of $250,000.

The finals continue in Las Vegas where elite ninjas in the country go head-to-head in high-stakes races with the fastest advancing in the competition. Thirty-two athletes compete in a new bracket-style tournament to determine the next champion.

 The finals continue in Las Vegas where elite ninjas in the country go head-to-head in high-stakes races with the fastest advancing in the competition. Athletes will face six obstacles, including Pole Grasper, Floating Monkey Bars and Piston Plunge. 

The finals begin in Las Vegas where elite ninjas go head-to-head in high-stakes, side-by-side races with the fastest advancing in the competition. Athletes will face six obstacles, including Shrinking Steps, Swinging Frames and Salmon Ladder. 

The semifinals conclude in Las Vegas where the ninjas will take on a longer course featuring 10 iconic obstacles from the past. The fastest will advance to the National Finals and compete in head-to-head races 

The Semifinals continue in Las Vegas where the ninjas will take on a longer course featuring 10 iconic obstacles from the past. The fastest will advance to the National Finals and compete in head-to-head races.

The Semifinals begin in Las Vegas, where the ninjas take on a longer course featuring 10 iconic obstacles from the past. The fastest will advance to the National Finals and compete in head-to-head races.

Qualifying rounds conclude in Las Vegas on the world's most challenging obstacle course. The top 20 athletes of the night advance to the semifinals.

Qualifying rounds continue in Las Vegas on the world's most challenging obstacle course. The top 20 athletes of the night advance to the semifinals.

Qualifying rounds continue in Las Vegas on the world's most challenging obstacle course. The top 20 athletes of the night advance to the semifinals.

Qualifying rounds continue in Las Vegas on the world's most challenging obstacle course. The top 20 athletes of the night will advance to the semifinals.

Qualifiers continue in Las Vegas with a special "How to Train Your Dragon" episode. Dragons Toothless and Stormfly join the ninjas, and the film's star joins Matt and Akbar in the booth.

Qualifying rounds begin in Las Vegas on the world's most challenging obstacle course. The competition returns bigger than ever by bringing back trailblazers, record-setters and fan-favorite competitors from the last 16 seasons.