Racers

• All entries are the property of the Mammoth Motocross, are non-refundable, not transferable, and not available for resale. Once entries have been submitted to Regio, sale is final. Identification is required for riders in practice and races. Any questions regarding these matters may be directed to 559.500.5360.
• It is the rider's responsibility to have the correct number and background prior to staging for first moto.
• Red Backgrounds for King of the West Class Winners Only

Red Backgrounds for King of the West Class Winners Only
All C Classes – Black Backgrounds/White Numbers
All B Classes – Yellow Backgrounds/Black Numbers
All Pro/A Classes – White Backgrounds/Black Numbers
All Others listed below are Your Choice:
Smoke and Fire Vintage, All +50, +60, All Minis, Schoolboy 1, 2, College Boy, All Women, Two Stroke Challenge, +25 A/B/C, 125cc, 250 C Jr, 250 B/C Open

Mammoth Motocross is an AMA-sanctioned event and runs according to the rules developed and written by AMA Congress, the rules-making body of the AMA composed of AMA organizers. The AMA Amateur Competition Rulebook is for the exclusive use of AMA-chartered clubs and promoters running AMA-sanctioned events.

The rulebook applies to all AMA-sanctioned competitions. Supplemental regulations are additions to the rule book based on the needs of a specific series. All supplemental regulations are approved by the AMA.

For rules and qualifying processes specific to Road to Mammoth, King of the West, and Mammoth Motocross, please read the rider rulebook.

View Rider Rulebook

Current and historical race results for Road to Mammoth qualifying events and Mammoth Motocross are provided by 2X Promotions and Trackside Online Results.