Round 2 of the District 37 AMA MAXXIS Big6 Grand Prix Series at Honolulu Hills Raceway, Taft, CA. Come out and celebrate the 71st. Annual Dirt Diggers GP. The Dirt Diggers GP is always an outstanding weekend of racing and spectating. The course is always a blast to ride with its well groomed motocross sections to it’s ungulating hills and speedy flat sections that will leave you with a huge grin. Be sure to pack up the whole family to come enjoy this great event.