The AMA Motocross Championship is an American motorcycle racing series. The motocross race series was founded and sanctioned by the American Motorcyclist Association (AMA) in 1972. The series is the major outdoor motocross series in the United States and is managed by MX Sports Pro Racing. The series began in 1972 with the introduction of two classes based on 500 cc and 250 cc engine formulas. A 125 cc class was added in 1974. In 2009, the MX class was renamed the 450 Class and the MX Lites class was renamed the 250 Class, to reflect the fact that all the competing manufacturers had adopted four-stroke machinery.
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Season 2002 | September 2002 | 1 | |
| Season 2003 | September 2003 | 1 | |
| Season 2004 | September 2004 | 1 | |
| Season 2005 | May 2005 | September 2005 | 13 |
| Season 2006 - Carmichael's Final Full Season | May 2006 | September 2006 | 13 |
| Season 2007 - Carmichael's Final Season (Partial) | May 2007 | September 2007 | 13 |
| Season 2008 | May 2008 | September 2008 | 13 |
| Season 2009 | May 2009 | September 2009 | 48 |
| Season 2011 | May 2011 | September 2011 | 48 |
| Season 2014 | May 2014 | August 2014 | 48 |
| Season 2015 | May 2015 | August 2015 | 48 |
| Season 2016 | May 2016 | August 2016 | 48 |
| Season 2017 | May 2017 | August 2017 | 48 |
| Season 2018 | May 2018 | August 2018 | 48 |
| Season 2019 | May 2019 | August 2019 | 48 |
| Season 2020 | August 2020 | October 2020 | 36 |
| Season 2021 | May 2021 | September 2021 | 48 |
| Season 2022 | May 2022 | September 2022 | 48 |
| Season 2023 | May 2023 | August 2023 | 44 |
| Season 2024 | May 2024 | August 2024 | 44 |
| Unassigned Episodes | 20 |
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