Rotax Challenge of the Americas

The Challenge of the Americas is a six-race winter championship that offers direct qualifying spots to the Rotax Grand Nationals and Rotax Grand Finals. The Challenge of the Americas is the premier winter karting series on the left coast.

2017 Schedule

Jan 27-29Musselman Honda CircuitTucson, Arizona
Feb 24-26Phoenix Kart Racing AssociationGlendale, Arizona
Mar 24-26Simraceway Performance Karting CenterSonoma, California

Please visit for more information on the Rotax Challenge of the Americas.

US Open

The US Open provides North America with a true, international Rotax campaign along with the excitement of shifterkart classes.

Keeping with the international Rotax scene, all seven Rotax MAX classes will be offered at the US Open including Micro MAX, Mini MAX, Junior MAX, Senior MAX, Masters MAX, DD2 MAX and DD2 MAX Masters. Spec Honda classes will include Senior and Masters.

2017 Schedule

Jun 22-25New Jersey Motorsports ParkMillville, New Jersey
Nov 1-4Rio All-Suite Hotel & CasinoLas Vegas, Nevada

Please visit for more information on the US Open series, including hotels, pit spots, rules and regulations and more.