| 2018 |
May 26 |
Glen Helen Raceway National MX R2 |
— |
— |
| 2017 |
May 27 |
Glen Helen Raceway National MX R2 |
— |
— |
| 2016 |
May 28 |
Glen Helen Raceway National MX R2 |
— |
— |
| 2015 |
May 23 |
Glen Helen Raceway National MX R2 |
— |
— |
| 2014 |
May 24 |
Glen Helen Raceway National MX R1 |
— |
— |
| 2009 |
May 23 |
Glen Helen Raceway National MX R1 |
— |
— |
| 2008 |
May 25 |
Glen Helen Raceway National MX R1 |
— |
— |
| 2007 |
Sep 9 |
Glen Helen Raceway National MX R12 |
— |
— |
| 2006 |
Sep 10 |
Glen Helen Raceway National MX R12 |
— |
— |
| 2005 |
Sep 11 |
Glen Helen Raceway National MX R12 |
— |
— |
| 2004 |
Sep 12 |
Glen Helen Raceway National MX R12 |
— |
— |
| 2003 |
May 11 |
Glen Helen Raceway National MX R1 |
— |
— |
| 2002 |
May 12 |
Glen Helen Raceway National MX R1 |
— |
— |
| 2001 |
May 13 |
Glen Helen Raceway National MX R1 |
— |
— |
| 2000 |
May 14 |
Glen Helen Raceway National MX R1 |
— |
— |
| 1999 |
May 9 |
Glen Helen Raceway National MX R1 |
— |
— |
| 1998 |
May 10 |
Glen Helen Raceway National MX R1 |
— |
— |
| 1997 |
May 11 |
Glen Helen Raceway National MX R3 |
— |
— |
| 1996 |
May 12 |
Glen Helen Raceway National MX R3 |
— |
— |
| 1993 |
Aug 1 |
Glen Helen Raceway National MX R8 |
— |
— |
