Mammoth Motocross


Mammoth Motocross  |  NOW OPEN

Public registration for the remaining Mammoth Motocross spots is now open. Registration schedule is as follows:

Monday, May 20

8AM  Vet Weekend 
12PM  Lucas Mini Championship
 2PM  All Other Categories 

Register Now

Road to Mammoth

The Road to Mammoth series and qualified rider entry has come to an end.


Registration Details

  • 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 559.899.0371.
  • Riders responsibility to have the correct number and background prior to staging for first moto. 
  • Red Backgrounds for King of the West Class Winners Only

White Backgrounds/Black Numbers 
All C Classes -
65cc 6-9 - White Backgrounds/Black Numbers
85cc 9-12- White Backgrounds/Black Numbers

Black Backgrounds/White Numbers
All B Classes -
65cc10-11- Black Backgrounds/White Numbers

Yellow Backgrounds/Black Numbers
All Pro/A Classes -

Smoke and Fire Vintage - Your Choice
All 50+ A – Your Choice
All 50+ B - Your Choice 
All 50+ C - Your Choice
All 60+ -Your Choice
50cc – Your Choice
65cc Open - Your Choice
Mini Sr 1 12-13 - Your Choice
Mini Sr 2 9-14 Your Choice
Supermini 1,2 - Your Choice
Schoolboy 1,2 - Your Choice
College Boy - Your Choice
Women 12+ – Your Choice
Two Stroke Challenge – Your Choice
+25 A/B/C – Your Choice
125cc - Your Choice
250 B/C Open -  Your Choice
250 C Jr - Your Choice