Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Take an insider's look in this NBC digital exclusive at how an obstacle goes from a simple idea to the ultimate athletic challenge.

Crashing the Course is back for Season 2! Host Alex Weber hangs out with Jessie Graff in Los Angeles to get a look at a brutal new obstacle: The Cannonball Slider.

Grant McCartney crashes the San Antonio course with host Alex Weber to break down the Sky Hooks. This complicated new obstacle is sure to be a ninja stopper.

Jake Murray crashes the Daytona Beach course with host Alex Weber to behold the Wingnuts - an obstacle to challenge even the most veteran ninjas.

Obstacle Design Challenge winner Kevin Brekke crashes the Kansas City course with host Alex Weber and ninja Natalie Duran to check out Crank It Up.

Drew Drechsel crashes the Los Angeles City Finals course with host Alex Weber to deconstruct the Swinging Pegboard - a swinging version of an already super difficult obstacle.

Jesse "Flex" Labreck crashes the San Antonio City Finals course with host Alex Weber to check out Spinball Wizard.

Ninja Daniel Gil crashes the Daytona Beach City Finals course with host Alex Weber and fans share what inspires them to work harder.

Ninja Grant McCartney and digital influencer Logan Paul crash the Kansas City City Finals course with host Alex Weber.

Alex Weber crashes stage 1 of the Las Vegas Finals course to get an insider look at some intimidating new obstacles.

Alex Weber crashes Stages 2, 3 and 4 of the Las Vegas Finals course to get an insider look at some ninja-busting obstacles.