A USMX weekend of dirt, family, and racing at Jack's Racing Enterprise in New Berlin: dirt bikes and quads, August 1-2. No AMA card required, any current district cards are accepted. Saturday runs open practice 9 AM to 2 PM ($40 big bikes, $20 for 65cc and under) with race sign-ups from 2:30 to 4 and 6 to 7:30 PM; Sunday races a 2-moto format from a 6:30 AM gate with 7 AM sign-ups. Entries run $35 for the first class, $30 second, $25 third, with experts and all 50cc classes at $25. Weekend admission is $20 and kids 16 and under get in free if they are not riding. Gates open Friday at 4 PM for the weekend. The pit bike track (50cc 2-stroke / 170cc 4-stroke max) is open all weekend with paid admission while EMTs are on site. Minors: download and notarize the double sided minor waiver, and the assigned guardian form if attending without a parent, from jacksracing.com before you arrive to save time at the gate.