Just hours into the race, Alaska takes her first victim when a contestant is evacuated.
During a brutal introduction to Survivor Camp, racers must live off the land to keep racing.
A racer falls ill after a steep climb while another gets snared in ropes during a cliff rappel.
Alaska claims another victim when a racer falls in the rainforest, suffering a debilitating injury.
After a dangerous bear encounter and a fall down a cliff, Alaska sends another team home.
One team risks rations, braving the frigid waters to catch food while Alaska sends another packing.
Caught in a biblical storm, teams stare down hypothermia during a frigid night in the woods.
One team gets lost paddling an icy labyrinth while another exits, revealing the final three.
The final three teams compete in the brutal, exhilarating climactic push for the $500,000 prize.