Airboats transport 12 teams to a remote island in the Everglades for the first of 13 legs.

The final dash includes stops in Hawaii, Alaska and Las Vegas.

The four remaining teams travel to Auckland, New Zealand, and rappel into the Lost World caves.

The teams make their way from Hong Kong Harbor to deep in the Australian Outback where the detour requires skill with a boomerang.

The teams must find the Central Plaza and the Star Ferry in Hong Kong.

The teams make their way back to Bangkok from Pai Pong Plang.

The teams travel from their pit stop at Anani Lodge to Bangkok.

The teams climb sand dunes and slide down them in Namibia.

The teams dance for money, haul fish and drink blended sheep's head in South America.

The 10 remaining teams hang-glide in South America.