SuperNats XXVIII

69DAYS

2026 Winter Series

127DAYS

2026 Pro Tour

205DAYS

SKUSA Mexico

1DAY

2025 PKC

37DAYS

2025 TSRS

15DAYS

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
Schedule // Pit Spots
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
Happy Memorial Day! Don’t miss Tonight’s Pre-Entry Cutoff for the California ProKart Challenge at CalSpeed!
Monday, 28 May 2018 10:54
Tonight at midnight PDT, Monday May 28, is the cutoff to pre-register for this weekend’s PKC Championship round #3 at CalSpeed in Fontana, CA. Registration and SKUSA memberships can be handled at https://www.motorsportreg.com/orgs/skusa. All event details are posted at http://www.superkartsusa.com/regional/california-pkc.html Save on the walk-up entry fee and do it now!

Move-in starts Thursday 5/31 at 11am. Hope to see you there!