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The race continues in Geneva, Switzerland, where a romance blossoms between two racers. Later, teams get caught in one of the largest-ever footraces to the mat for first place.
The race continues in Cartagena, Colombia, where claustrophobia threatens to prevent one racer from going deep into catacombs to retrieve a clue.
The race continues in Chamonix, France, where teams climb 15,000 feet in the French Alps. One duo's race is threatened when they drop a clue down a mountain.