The Motul MX Nationals is Australia's premier motocross championship. The 10 round series will travel across the country to crown Australia's best riders. Results · Round 6 · Competitor Info · Round 1 – Wonthaggi. Year, cc, cc, Women's MX. , United States Year, Class, Class, Women's MX. , Australia Winningest Riders · AMA Supercross · AMA Motocross and. ATV Motocross National Championship, presented by CST Tires, an AMA National Championship, America's most prestigious and longest standing ATV racing. PE - Part 2. Auto-advancing for mobile devices cols: Spring Creek July 22, Millville, MN Tickets Event Info. A women's national championship series was introduced in Text is available under the Creative Commons Attribution-ShareAlike License ; additional terms may apply.