Watch Movies2Watch. Two young people with minimal training decide to complete Ironman 70.3. One of the world's toughest endurance challenges. With almost no experience, they throw themselves into a project that requires both discipline, willpower and mental strength. The documentary follows the journey from an uncertain start to the actual race day. Along the way, we encounter doubt, pain, humor and true friendship. How far can you really go on sheer will? IRON 70.3 is a personal and motivating film about setting yourself a goal that seems impossible, and daring to try anyway.