Hagan Parkman

In a series first, 11 new teams of social media stars depart from their own homes all across the country and head for Mexico City, where they set off fireworks and dig deep at an archaeological Roadblock.

For the first time ever, the Race travels to Colombia where Racers go mud-diving for emeralds in a volcano.

The race continues in Columbia, where claustrophobia could prevent a racer from going deep into the catacombs to retrieve their next clue.

As the final three teams race from Shenzhen, China to Santa Barbara, Calif. for the final leg of the Race, they face a gut-wrenching leap of faith: jump off a building more than 150 feet high and perform a harrowing task of synchronized mountaineering.