Enter a world in Central Austria where 1300 extreme motocross riders line up to put themselves through an agonizing thrill ride of physical and mental endurance on a dirt bike. This is TOUGHER THAN IRON. An account of the toughest single-day motocross race in the world. Enter a world in Central Austria where 1300 extreme motocross riders line up to put themselves through an agonizing thrill ride of physical and mental endurance on a dirt bike. This is TOUGHER THAN IRON. An account of the toughest single-day motocross race in the world. Enter a world in Central Austria where 1300 extreme motocross riders line up to put themselves through an agonizing thrill ride of physical and mental endurance on a dirt bike. This is TOUGHER THAN IRON. An account of the toughest single-day motocross race in the world. Enter a world in Central Austria where 1300 extreme motocross riders line up to put themselves through an agonizing thrill ride of physical and mental endurance on a dirt bike. This is TOUGHER THAN IRON. An account of the toughest single-day motocross race in the world.