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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.

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