Check Pro Auto Sports schedule. I use them, more fun than NASA.
Feb 20/21 Wildhorse East
Mar 19/20 Chuckwilla (Desert Center between Blyth and Indio, CA)
Mar 26 AZ Motor Spors Park
Apr 16/17 Wildhorse Main
Apr 29/30/31 Circuit of Americas
Events planed every month except August of 2016 on their schedule at
www.proautosports.com