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.