Back Breaker (S01E02)

With the Race to the Center of the Earth reaching a critical point, teams are challenged like never before, both mentally and physically. In Canada, a snowstorm complicates matters for one team. Meanwhile, in Vietnam, an adventurer confronts her deepest fears. In South America, the unity of the team comes under scrutiny. Lastly, in Russia, the participants face their longest day yet in the competition.