Following a Race that spanned three continents, nine countries and 40,000 miles, Tammy and Victor, Cara and Jaime and Luke and Margie will square off in a grueling final leg that will test their endurance, their memory and one Racer's karma.

The Racers must eat fried scorpions at a Roadblock, but even the distaste of a scorpion pales in comparison to the cutthroat behavior of a Team that publicly throws another under a bus with a U-Turn.

In an Olympic-themed task in Beijing, Teams swim the same distance that Michael Phelps swam in the 400 meter individual medley, and two Teams continue to hold a grudge against each other.

During the Detour, one Racer is frustrated when a dancing judge doesn't understand their question, and two Teams battle each other throughout the leg, leading to a full-blown mat meltdown.

Several Racers leave their backpacks behind at a Roadblock and find themselves shoeless with no passports, and Teams let loose in a Karaoke-themed Detour.

One team finds that time is not of the essence when a shopkeeper hinders their movement, and others discover that a hurried pace doesn't always equal victory, particularly when mistakes can add up to penalties.

As the race heats up, Teams face a roadblock made of camel feed, a speed bump the size of an elephant and a detour made more complicated by an impatient taxi driver.

Teams must strip down to their bare essentials during a bone-chilling Roadblock, and another Team struggles to stay in the Race while having to navigate a stick shift through the icy streets of Siberia.

Teams travel to Siberia, the show's first- ever visit, where a first place team quickly learns how it feels to be last, and when a new twist is revealed, one Team is left scrambling for their survival in the game.

Teams scour the Transylvania countryside for buried coffins, while one of the Race's frontrunners finds themselves at the back of the pack when their plane makes an unexpected landing.

An injured Racer finds their Team's destiny in Mother Nature's hands and must make a game changing decision, while another Racer's hopes are pinned to a mountain rescue.

Eleven teams depart from the Joint Forces Training Base in Los Alamitos, Calif. and travel to Switzerland where the world's second tallest bungee awaits, as well as an exhausting, "cheesy" challenge.