CRS Rallycross at Prairie City OHV in Rancho Cordova, organized by NorCal Rallycross. Prairie City is an off-highway vehicle park in the Sacramento foothills, and its open layout makes for a wide variety of course designs. Saturday is practice; Sunday is the CRS points competition. Cars run one at a time against the clock on a dirt course marked with rubber cones — any hardtop street car in safe working condition is eligible to compete. The NorCal RX series is free to join and follows SCCA rallycross rules for classing. Results count toward the California Rally Series championship. Register at norcalrallycross.com.