World’s Toughest Race Eco-Challenge Fiji – Official Trailer - From the creator of Survivor, 66 teams descend upon Fiji to compete in the most epic global adventure race ever attempted. Bear Grylls hosts this 11-day expedition that pushes competitors to their physical and emotional limits. For the veteran teams the goal is to win – but for most, the dream is to finish and prove to themselves and the world, that they can prevail in the World’s Toughest Race.