Registration for rounds 3/4 of the Challenge in Winchester, CA. at the K1 Circuit is now open. Pre entry deadline will be February 25th.

Visit RaceSelect.com to pre-register for our K1 event March 7-9 REGISTER HERE

Challenge of the Americas is offering competitors the opportunity to reserve their favorite number for the season. In years past, it has been a first come, first serve format when registering and receiving the kart number requested. For $50, each competitor can reserve their favorite number in their category for the season. It is encouraged that competitors submit their number reservation quickly before it is gone.

The following are the class number ranges for the 2025 Challenge.

60cc Cadet: 100-199

100cc Junior: 800-899

100cc Senior: 900-999

100cc Masters: 700-799

Shifter Senior: 400-499

Shifter Masters: 500-599