Six long-distance triathletes train for the world’s largest long-distance triathlon race, Challenge Roth in Germany, which is scheduled to take place on July 21st, 2014. Those six athletes include: 2-time Ironman World Champion Mirinda Carfrae (Australian), 7-time Ironman Champion Luke McKenzie (Australian), American double-above-knee Paralympian Rudy Garcia-Tolson, Challenge Roth race director Felix Walchshoefer, Chinese athlete Qi Dang, and American amateur athlete Bessy.