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 visit 2XPromotions' website below.