World's Toughest Race: Eco-Challenge Fiji - Season 1 Episode 7 -

A lead team falls farther behind as a fallen teammate faces a medical crisis. Lead teams press ever-closer to the finish line of the race, while trailing teams continue to suffer. Many racers think about their families as they seek motivation to continue. A lead team's race may come to a surprise end when they are forced to make a "mayday" call.