SuperNats XXVIII

71DAYS

2026 Winter Series

129DAYS

2026 Pro Tour

207DAYS

SKUSA Mexico

3DAYS

2025 PKC

39DAYS

2025 TSRS

17DAYS

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

Fifth Round of ProKart Challenge Completed at Sonoma Raceway
Wednesday, 27 August 2025 17:00

A fifth straight victory in KA100 Senior for Keagan Kaminski (Photo: Sector 5 Media)

The penultimate round of the 2025 ProKart Challenge took place at the Sonoma Raceway karting circuit over the August 23-24 weekend. It was the first time since 2017 that Superkarts! USA hosted an event at the Sonoma, California facility. The weekend weather was perfect for racing around the ‘National Pro’ layout, welcoming the second largest event of the season at over 160 entries competing in the 11 categories.

A total of 46 drivers contested the Formula Works KA100 Senior category on the weekend with the same end result as the first four rounds. Chase Hand was able to set fast time in qualifying, posting a 48.499 lap to edge out four-time race winner Keagan Kaminski by 75 thousandths. Hand was shuffled out of the lead on the opening lap of the Prefinal by Kaminski but returned to the point on lap three. He led until lap 10 with Texas Sprint Racing Series champion Jesus Vasquez Jr. taking control and the race win – as Jackson Menchu slipped into second. After leading the opening three laps of the Final, Vasquez dropped down to fifth as Hand took over the lead. Vasquez fought back to reclaim the top spot by lap 10. Hand led for a second time on lap 17, showing the way to the white flag. During the final circuit, Kaminski was able to work past Hand. Leading only the final lap, Kaminski celebrated his fifth straight victory on the season. Hand was short at the line by 58 thousandths, with Menchu joining them on the podium in third. Stephen Eisert and Ryan Persing finished fourth and fifth.
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ProKart Challenge to Host Round Five at Sonoma Raceway
Wednesday, 13 August 2025 16:03

Superkarts! USA returns to the Sonoma Raceway karting circuit for the first time since the 2017 SpringNationals,
hosting the ProKart Challenge over the August 23-24 weekend (Photo: eKartingNews.com)

A significant weekend lies ahead for the ProKart Challenge program. The Superkarts! USA regional program is set to host Round Five of the 2025 schedule on August 23-24 at Sonoma Raceway. The weekend marks the first trip to the Sonoma, California facility for the organization since 2017 when they hosted the SKUSA Pro Tour SpringNationals.

Round Five action for the ProKart Challenge is going to take place on the ‘National Pro’ layout, which eliminates most of the famous Tic-Tac-Toe section of the course. Official practice begins on Saturday, August 23 with four rounds prior to qualifying to close out the day. Sunday, August 24 welcomes warm-up, Prefinal and Final to conclude action for Round Five for all categories.
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Second Half Underway for Superkarts! USA ProKart Challenge
Friday, 27 June 2025 13:15

Keagan Kaminski secured a fourth straight victory in the KA100 Senior division (Photo: Sector 5 Media)

The Superkarts! USA ProKart Challenge series hosted the fourth round of the 2025 season, returning to the K1 Circuit. Also the site of the opening two rounds of the championship chase back at the beginning of March, the Winchester, California facility welcomed over 150 entries on June 21-22 for an action-packed weekend of racing. The second visit of 2025 to the K1 Circuit featured a revised ‘Pro Track’ configuration that utilized the D2 chicane and cut-through at turn eight.

The Formula Works KA100 Senior class saw Keagan Kaminski gain a fourth straight victory on the season. The weekend began with Lanie Benjamin becoming the third different top qualifier on the year, posting a 51.583 lap time to top the 43-driver field. Kaminski was back in the eighth spot after the timed session. The championship leader drove up to the top spot in the 10-lap Prefinal, taking the race win over Gavin McCune and Jackson Menchu. It was Kaminski and Menchu exchanging the lead multiple times over the first half of the 20-lap Final. Kaminski secured the lead on lap 11, driving away to a one-second advantage victory. McCune was able to win the battle for second over Menchu to complete the podium. Izaac Gutierrez was right there in fourth, recording the fast lap of the race with Shea Aldrich in fifth.
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Superkarts! USA ProKart Challenge Returning to K1 Circuit
Wednesday, 11 June 2025 12:13

The ProKart Challenge is set to return to the K1 Circuit for R4 of the 2025 championship program over the June 21-22 weekend

The 2025 ProKart Challenge is set to begin the second half of the schedule, hosting Round Four of the championship program at the K1 Circuit on June 21-22. The new facility in Winchester, California will be site of the two-day event to continue the run toward the 2025 championships.

Two events served host to the opening three rounds of the 2025 ProKart Challenge, with a double-round weekend at K1 Circuit during the first weekend of March before traveling to the new Spring Mountain Karting facility in Nevada in April for Round Three.

The Round Four action at K1 Circuit will be on a different layout, featuring a revised ‘Pro Track’ that utilizes the D2 chicane and cut-through at turn eight. Official practice for the event begins on Saturday, June 21 with four rounds prior to qualifying to close out the day. Sunday, June 22 welcomes warm-up, Prefinal and Final to conclude the action for Round Four.

Keagan Kaminski has a three-race win streak heading into K1 Circuit in the Formula Works KA100 Senior class. He leads the championship by 133 points over Shea Aldrich with two-time podium finisher Johnie Stamps in third. Two wins have Matthew Cagle at the top of the SuperSpeed Bearings KA100 Junior championship chase. Sebastian Hauser is in second, trailing by 79 points heading into the second half of the season, with Canadian Nathan Dupuis sitting third in the standings. Two drivers have won over the three rounds in Mike Manning Karting KA100 Master. Tim Meyer leads the championship with his two wins over Round One winner Logan Manus, while Damon Duckworth holds the third position.
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Inaugural ProKart Challenge Event at Spring Mountain Karting a Success
Thursday, 17 April 2025 14:45

Keagan Kaminski won a third straight in KA100 Senior (Photo: Sector 5 Media)

The 2025 ProKart Challenge hosted the second event of the season, making its inaugural visit to the Spring Mountain Karting facility over the April 12-13 weekend. The new karting track in Pahrump, Nevada – roughly one hour from downtown Las Vegas – welcomed over 130 entries to contest the third round of the championship chase. At just over 7/10-mile long, the ‘North Track’ is a replica of the former XPlex course outside Las Vegas, site of the first five SKUSA SuperNationals.
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