It’s been just over a year since we jumped into promoting amateur motocross with our very own organization, the Muscle Milk TWMX Race Series, and because it has been such a success in Southern California, it only seems right to expand. Since the concept was visualized a year ago, we have discussed the numerous areas we could venture off to, but one stuck out the most: Northern California. Its motocross population is massive and fiercely loyal, while the tracks that dot the area are among the best in the country. Our move to NorCal is just around the corner, as it kicks off on Saturday, March 30th, 2013, at 408MX in San Jose, California.

We will spend both the Spring and Summer in the north, running two separate championships in our traditional “Spring and Summer Cup” format. The 2013 Muscle Milk TWMX Race Series Northern California “Spring Cup” will visit three tracks, 408MX, MMX, and Club Moto for a five round series. It begins on March 30th, at 408MX, in San Jose, then travels to MMX in April and Club Moto in May before back-tracking to 408MX for a double-header finale in June. The Summer Cup schedule will be released in the coming weeks.

2013 Muscle Milk TWMX Race Series Northern California Spring Cup

March 30th – 408MX | San Jose, California

April 28th – MMX | Marysville, California

May 11th – Club Moto | Livermore, California

June 8th and 9th – 408MX | San Jose, California 

This is not the only change the Muscle Milk TWMX Race Series has for 2013. Starting with the coming Southern California Spring Cup, the day’s racing will be divided between two tracks. Since every facility that the series visits in Southern California has multiple tracks on the property, we will determine which track a racer competes on by their skill level. All Beginner level classes – from PeeWee to Vets – will race on the designated “Amateur” track.” Those racing age-bracketed mini classes, and all other classes from Novice on up, will race on the “Expert” track. This will allow multiple motos to be run simultaneously and provide safer and speedier racing for all. With this change, our days at the track will be drastically shortened and the final motos are expected to be run by 2:30 PM. This goes into effect at our Spring Cup kickoff on March 24th at Cahuilla Creek. 

2013 Muscle Milk TWMX Race Series Southern California Spring Cup

March 24th – Cahuilla Creek |Anza, California

April 7th – Perris | Perris, California

April 14th – Glen Helen | San Bernardino, California

May 5th – Perris | Perris, California

May 18th and 19th – Competitive Edge | Hesperia, California

About Muscle Milk TWMX Race Series
Owned and operated by TransWorld Motocross, this race series runs annually and consists of four, 6-race series (Winter Cup, Spring Cup, Summer Cup, and Fall Cup) totaling 24 races, all of which include riders of varying ages and ranges of experience from beginner to pro levels. The series title sponsor is Muscle Milk. Associate sponsors include: Bell Helmets, BTO Sports, and One Industries. Affiliate sponsors include: Asterisk, BRAKING, EKS Brand, Leatt, Metal Mulisha, Maxxis Tires, New Era Caps, ODI, Race Awards, Works Connection, etnies, MTA, Yamaha, FMF Racing, Kal-Gard. Racing classes include PeeWee, Minis, 250s, 450s, Girls/Women, 25+ and Vet. Go online to for more information about the Muscle Milk TWMX Race Series.

Series Sponsors
Muscle Milk
BTO Sports
One Industries
EKS Brand
New Era
Metal Mulisha
Works Connection
Maxxis Tires
Race Awards

About TransWorld Motocross
TransWorld Motocross is the largest motocross media outlet in the world, delivering comprehensive lifestyle coverage to an audience of new and experienced motocross enthusiasts about their favorite sport. Found online at Motocross is published by TransWorld Media, the world's leading action sports media company. TransWorld is a division of the Bonnier Corporation. Bonnier Corporation ( is one of the largest consumer-publishing groups in America and the leading media company serving passionate, highly engaged audiences through 50 special-interest magazines and related multimedia projects and events. Bonnier Corp. is the US division of the Bonnier Group (, a 200-year-old family-owned media group based in Sweden with business operations in 25 countries.

About Muscle Milk
Muscle Milk® Ready-to-Drink is a protein-enhanced functional beverage that promotes workout recovery, lean muscle growth, and sustained energy. Muscle Milk takes the guesswork out of high performance nutrition, delivering a precise blend of premium proteins, complex carbohydrates, functional fats, vitamins & minerals. CytoSportTM, the maker of Muscle Milk®, is among the largest sport nutrition protein beverage companies in the U.S. and offers a complete line of protein-enhanced powders, shakes and bars. Muscle Milk® was named Ready-to-Drink Beverage of the Year by, Best Functional Beverage, and Beverage of the Year by BevNet and Company of the Year by Beverage Forum presented by Beverage Marketing Corporation and Beverage World.