2025 SuperMotocross World Championship
The 2025 SuperMotocross World Championship was the third edition of the premier combined discipline off-road motorcycle racing competition, held in the United States. Combining the AMA Supercross Championship and the AMA Motocross Championship, along with three final SuperMotocross rounds, the series ran from January to September.
Jett Lawrence went into the season as the reigning overall champion in the 450cc class, while Haiden Deegan began the campaign as the defending champion in the 250cc class.
Lawrence was able to successfully defend his title in the 450cc class, making him a three-time champion. In the 250cc class, Jo Shimoda took his first SuperMotocross World Championship, after a battle against reigning champion Deegan across the three play off rounds.
2025 AMA Supercross Championship
The 2025 AMA Supercross Championship was the 52nd season of off-road stadium motorcycle racing in the United States. Comprising 17 rounds, the series ran from January until May, crowning supercross champions in both the 250cc and 450cc classes, concluding with the Salt Lake City round on May 10.| Round | Date | Location | Stadium | Broadcast | 450cc Winner | 250cc Winner | ||||||||||||||||
| 1 | January 11 |  2025 AMA Motocross ChampionshipThe 2025 AMA Motocross Championship was the 54th season of the premier off-road motocross racing series in the United States. Comprising eleven rounds across three months from late May until August, the series crowned champions in both 250cc and 450cc classes.
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