SuperNats XXVIII

58DAYS

2026 Winter Series

116DAYS

2026 Pro Tour

194DAYS

SKUSA Mexico

166DAYS

2025 PKC

26DAYS

2025 TSRS

4DAYS

Next ProKart Challenge Event

PRE-ENTRY OPEN NOW
Closes Tues, Oct 7 at 11:59 PM PDT

K1 Oct 3-5 - PRE-ENTRY OPEN NOW
Closes Sept 29 at 11:59 PM PDT
Schedule // Pit Spots // Pit Passes
Round 6 - K1 Circuit October 11-12, 2025
K1 Circuit
32240 Grand Ave
Winchester, CA 92596
k1circuit.com
Google Maps
There will be a Sunoco vendor pumping fuel.
There is no camping at this facility.

California ProKart Challenge
Last Call for PKC Round 3 CalSpeed pre-entries! Deadline is Tonight!
Monday, 29 May 2017 12:58
Happy Memorial Day and Thank You to all of those who have served our country!
Racers, don’t miss tonight’s cutoff for ProKart Challenge Round 3 at CalSpeed this weekend! We will still take walkup entries at the track starting on Thursday afternoon at 3pm, but it will cost you a little more time and money! Why not do it now?
Click HERE for all EVENT DETAILS, and HERE to register on MotorsportReg!