The 2024 Monster Energy Supercross Round 3 was held in San Diego on January 20, 2024. The second qualifying session was postponed due to rain, but the track crew tried to keep the course open, making for an exciting racing evening. Fans witnessed Aaron Plessinger and Nate Thrasher win their respective classes in the end. Check out the full results below:
| Position | Riders | Interval |
| 1 | Aaron Plessinger | 22 Laps |
| 2 | Cooper Webb | +02.188 |
| 3 | Justin Barcia | +22.099 |
| 4 | Jett Lawrence | +37.164 |
| 5 | Jason Anderson | +42.230 |
| 6 | Dylan Ferrandis | +44.447 |
| 7 | Hunter Lawrence | +52.323 |
| 8 | Chase Sexton | 21 Laps |
| 9 | Eli Tomac | +04.517 |
| 10 | Dean Wilson | +21.237 |
250SX Main Event
| Position | Riders | Interval |
| 1 | Nate Thrasher | 16 Laps |
| 2 | Garrett Marchbanks | +01.203 |
| 3 | Jordon Smith | +05.141 |
| 4 | Jo Shimoda | +05.572 |
| 5 | Levi Kitchen | +06.390 |
| 6 | RJ Hampshire | +10.486 |
| 7 | Mitchell Oldenburg | +38.741 |
| 8 | Ryder Difrancesco | +51.399 |
| 9 | Hunter Yoder | 15 Laps |
| 10 | Anthony Bourdon | +11.599 |