The 2026 Monster Energy AMA Supercross Championship season opener took place in Anaheim, California, on 10 January 2026. At this event, riders competed in the 450SX and 250SX classes. Following two thrilling main events, Eli Tomac and Max Anstie kicked off their seasons with impressive victories in Anaheim. Check out the Anaheim 1 SX full race results below:
| Position | Riders | Interval |
| 1 | Eli Tomac | 20 Laps |
| 2 | Ken Roczen | 1.470 |
| 3 | Jorge Prado | 26.956 |
| 4 | Hunter Lawrence | 28.678 |
| 5 | Jason Anderson | 31.935 |
| 6 | Justin Cooper | 32.484 |
| 7 | Cooper Webb | 34.935 |
| 8 | Chase Sexton | 45.249 |
| 9 | Dylan Ferrandis | 49.616 |
| 10 | Aaron Plessinger | 57.541 |
250SMX MAIN EVENT RESULTS
| Position | Riders | Interval |
| 1 | Max Anstie | 15 Laps |
| 2 | Chance Hymas | 6.733 |
| 3 | Ryder Difrancesco | 9.058 |
| 4 | Haiden Deegan | 9.814 |
| 5 | Michael Mosiman | 16.482 |
| 6 | Levi Kitchen | 20.698 |
| 7 | Max Vohland | 28.270 |
| 8 | Hunter Yoder | 34.551 |
| 9 | Avery Long | 42.284 |
| 10 | Dilan Schwartz | 46.848 |