Rules

At Mammoth Motocross:

Rider must be at the line for the start. You must start your first moto to be able to start your second moto or qualify for the Main at Mammoth Motocross. You cannot skip first moto and ride second moto to qualify. Adjustments on race day may be made to qualifying totals if divisions are not equal. Starting positions on gate for first moto is determined by draw on a first­come basis. Starting position on gate for second moto is determined by first moto finish. Starting position on gate for Final is determined by position from qualifying races and division. If you jump gate at start you will be penalized one lap. You may pack in front of the gate at the finals (no Tools or Farming). You will be disqualified if you pass or ride unsafe during a yellow flag.

Supercross Format:

Racers with more than one division:
Event staff will post the numbers of riders transferring to Main Event. If you place in transfer position from first moto you go directly to Main Event. If not, you ride in a Semi or LCQ and try to qualify for the Main Event. Results in Main Event are final results for this race; all qualifying positions will come from main.

Motocross Format:

Races with only one division of racers will be scored in a two-moto format with the second moto being the tiebreaker. Check your race schedule to determine how your race will be scored. Road to Mammoth qualifiers: You must race 2nd moto to qualify.

 If you have a duplicate Bike# for your class, you will be REQUIRED to run X’s on ALL 3 Number Plates for the entirety of the event. If you are running the same bike in multiple classes, the X will apply in all classes.

Make sure you have the correct background color for your class. We now use the Amateur National color scheme.
If you do not, you will be given the correct color sticker for Practice Day. Practice sessions are structured per skill level/classes. You may NOT go out in any other practice than you’re assigned; or you will be subject to removal from Practice for the day.

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

We DON’T allow the following at the event:
Dogs, pit bikes, golf carts, drones, fires, camping at the track; or bike washing in the forest or at the track.

Lodging

Trail Riding in the Mammoth Lakes Area
For those of you who have been coming up to Mammoth Lakes to recreate for years, you’ll know about all the amazing terrain there is to enjoy.  With about 2,000,000 acres of forest the riding is endless.

We almost lost the Mammoth Motocross event  because of those few people who didn’t follow the rules. Please make sure to following the rules listed below:

DO:        

• STAY ON OHV ROUTES!
• Respect other trail users
• Ride at a safe speed
• Have your current registration and green sticker visible on your bike (race bikes are an exception to this while in the track)
• Obey all OHV laws
• Slow down near all campsites and public sites
• Be safe and have a great time!
• Get a map of approved riding before venturing out riding

DON’T:

• RIDE OFF THE OHV ROADS!
• Operate a motor vehicle while under the influence of alcohol or drugs
• Ride recklessly
• Forget your helmet
• Ride on hiking, bicycle, or horse trails
• Rhino/Golf Cart near the Mammoth Motocross Area

PENALTIES:

• IMMEDIATE DISQUALIFICATION FROM THE MOTOCROSS EVENT
• Potential discontinuation of future Mammoth Motocross events
• Fines as determined by U.S. Forest Service and Mammoth Lakes Police Department

BIKE WASHING:

• Condo and Hotel owners are required by local law to restrict bike washing at their facility. Washing of bikes in the forest is prohibited. There are facilities in the Town of Mammoth Lakes for washing
• Enforcement could occur

Absolutely NO bike washing at the track

Age classes for RTM and Mammoth Motocross:

All Road to Mammoth and Mammoth Motocross Classes follow the AMA National Class/Equipment specifications. Modification of these requirements will deem you disqualified.

Minimum age for mini riders is 5 years old.
All Youth classes, 250C Jr (12-17), and Schoolboy 2 (12-17) B/c are Age based as of age on Jan 1st for the remainder of the year.
Plus 25 years of age as of day last day of Big Bike Weekend.
30+, 40+, 50+,  60+years of age as of last day of Vet Weekend.
Ability Level: C Rider-Novice, B Rider- Intermediate, A Rider- /Expert/Pro Pro-Sport

A rider must be 14 yrs of age to ride a 250cc machine in any class.
A rider must be 12 yrs of age to ride a Supermini in any class.
Racers under the age of 18 must have an Annual Release Waiver Card or parent present or a duly-notarized release waiver presented at registration to participate.

Equipment classes:

All Road to Mammoth and Mammoth Motocross Classes follow the AMA National Class/Equipment specifications. Modification of these specifications will deem you disqualified.

25+ and all Vet Classes: All size bikes are allowed for the running of these classes.

All Classes are Modified. Limited bike may ride with Mods but there are no limited classes for Road to Mammoth or Mammoth Motocross.

50cc 6-8: (61cc 2-stroke max) Engine Modifications open; Must use original engine type lower end and cylinder ( no stroke); Single Speed Transmission only; Overall Length limited to 42″ axle to axle; Suspension Modifications open; Maximum wheel size 12 inches Front 10″ rear

65cc: 59-65cc (Stock Bore and Stroke)

85cc:
85cc (10-12yrs): 2 Stroke 79-85cc only; No 150f (Stock Bore and Stroke); 17″ Front wheel Max, 16″ Rear wheel Max
Mini Sr 1 (12-14yrs): 79-85cc 2 Stroke/75-150cc 4 Stroke (Stock Bore and Stroke). 16″ Rear Max – 19″ Front Max (new as of 2024)
Mini Sr Open* (11-15yrs) 79-85cc 2 Stroke/75-150cc 4 Stroke (Stock Bore and Stroke). 16″ Rear Max – 19″ Front Max (new as of 2024)
Supermini 1 (12-15yrs) & Supermini 2 (13-16 yrs): (112cc 2 Stroke/150cc 4 Stroke).16″ Rear Max 19″ Front Max

Women (12yrs+): 99cc-250cc; 125-450cc

CollegeBoy A/B/C (18-24yrs): 122-0pen cc

Schoolboy 1 (12-17yrs) B/C: 86cc-125cc 2 Stroke/75-150cc 4-Stroke. Min Wheels 19″ Front, 16″ Rear
Schoolboy 2 (12-17yrs) B/C: 100-250cc 2 Stroke/126-250cc 4-Stroke. Min Wheels 19″ Front, 16″ Rear
125cc B/C (12-17yrs): 21″ Min Wheels Front

Open Classes: 144-Open cc 2 Stroke/250-450 Four Stroke; 21″ Min Wheels Front
250cc Class: Up to 250cc-2 Stroke, 250cc 4 stroke
250cc B/C Open: 100-250cc 2 Stroke/126-250cc 4 Stroke; 21″ Min Wheels Front
450cc Class: 250cc-Open cc; no 125cc or 144cc

To protest illegal size of motorcycle you must post $500 (Two Stroke) $1000 (Four Stroke) and be in the same class of rider you are protesting. One half of the Dollars goes to the bike owner if it is legal. One half stays with us for administration. Anyone protested for age in Vet or Senior class must produce a valid ID to race officials. You must be in the same class of rider you are protesting. If protesting rider ability level you must produce verification (on-line proof recent result sheets.). You must be in the same class of rider you are protesting.

AMA King of the West Title:

AMA King of the West #1 Plate
Special Exclusive Red background to compete with for this years’ Mammoth Motocross
Exclusive First Gate pick at this years’ Mammoth Motocross

Qualifying Rules for KOW:
Qualifying events include the 7 RTM rounds and the Cal Classic event.
Rider must attend a min. of 4 rounds; points from Top 5 rounds will be counted.
Top 5 riders for each Mammoth class will get that gate pick at the final Mammoth event for the class earned. King of the West will be crowned at Round 7. 2nd thru 5th place will receive trophies at Mammoth Motocross.

Cal Classic – A select number of classes will not earn points for that years’ King of the West Series. Selected classes will be noted on entry form. NOT ALL classes are eligible for the King of the West series.

King of the West Series Points will be posted on web site under Results – Series: Road to Mammoth
It is the rider’s responsibility to ensure that all points are correct.
Any discrepancy can be addressed to amber@2xpromotions.com.
Tie Breakers – If at the end of series riders are tied in points; Rider with the best finish in the last race will get the higher position.

Road to Mammoth Qualifiers:

Each racer will only have to qualify once. You may ride as many qualifiers as you wish, but you are only required to qualify once. You must race 2nd moto at the Qualifier to qualify.

Each Round has been given a certain top # of riders that qualify directly into the Mammoth Motocross Championship; see Chart below. The closing date of qualified entry is tbd. You must ride the final event at Mammoth in the class you qualify in at the qualifier. Entries are non-transferrable and non-refundable. Sandbaggers will not be tolerated and will be removed from qualifying positions.

Once a racer has qualified, qualifying results will be posted on the “I qualified” tab on 2xpromotions.com. Select the Class from the drop-down and find your name. The link will gain access to entry to the final event registration when it opens. It’s the racers’ responsibility to enter the correct qualified classes ONLY for the final by the deadline or forfeit qualified position. Racers who enter classes they did not qualify for will be removed, and refunds will not be issued.

Qualified Riders must be signed up by Friday may 15th. 

Who Qualifies

Qualifying is based on a top # of each class in accordance with final event capacity and schedule; see below. All RTM races are a 2-moto format. Racers must race 2nd moto to qualify; racers with a 2nd moto DNS will be removed.

Racers who have qualified at previous rounds are removed, and the next position is bumped up. This process is done manually, and will be updated on the “I Qualified” tab within a week post-event. Questions regarding qualifying results can be addressed to amber@2xpromotions.com.

Once a racer has qualified, they must register for the final prior to the deadline to secure an entry. All Qualified Riders must be signed up by Friday May 15th to secure their entries.