SuperNats XXVIII

81DAYS

2026 Winter Series

139DAYS

2026 Pro Tour

217DAYS

SKUSA Mexico

13DAYS

2025 PKC

NOW!!!

2025 TSRS

27DAYS

Next ProKart Challenge Event


PRE-ENTRY CLOSED!
Walk-Ups taken onsite on Friday at 3PM.
KA SR is sold out.
Round 5 - SONOMA RACEWAY August 23-24, 2025
Sonoma Raceway Karting Center
29355 Arnold Dr,
Sonoma, CA 95476
sonomaraceway.com
Google Maps
There will be a Sunoco vendor pumping fuel.

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!