Stories from the world's top motocross racers compete in the grueling 12-race AMA Outdoor Motocross Championship Series to battle the heat, the tracks and each other.<br /><br /><br /><img src="http://ll.broadbandsports.com/images/35434_thumb.jpg" alt="Glen Helen - AMA Outdoor Motocross Championship Series" title="Glen Helen - AMA Outdoor Motocross Championship Series" width="150" height="90" alt="Glen Helen - AMA Outdoor Motocross Championship Series"/>
