A car turning in at a circuit apex at dusk

Racing

The Challenge
Series

Time attack with Speed Ventures at the best circuits in Southern California. Four classes, eight rounds, and a championship decided on the clock.

Friendly competition, with lots of heart

We all start somewhere. Beginners, enthusiasts and professionals run the same weekends, and the paddock is the reason most people come back — the racing is only half of it.

Corner3 runs the series, and the parts we sell and the setups we recommend get proven here first, at racing speed, in front of people who notice when something is wrong.

Enter a round Read the rules

Four classes

Class 1

Modified R35s, and cars that want to race against them within the limits of the class.

Class 2

More race-oriented cars — aero modifications and high-grip tyres allowed.

Class 3

Mid-level, naturally aspirated or stock turbo: stock-turbo SR S-chassis, stock TT Z32, Z33 and later.

Class 4

Lower-powered, naturally aspirated: S-chassis, B-chassis, Z-chassis up to the NA Z32.

2026 season

Eight rounds

RoundDateCircuit
R1February 28Buttonwillow The Classic
R2March 14Chuckwalla Valley Raceway
R3April 18Las Vegas Motorspeedway
R4May 2Big Willow
R5September 12Buttonwillow The Classic
R6October 3Buttonwillow The Circuit
R7November 21Chuckwalla Valley Raceway
R8December 12The Circuit R's Day

Championship

2026 standings

Points after the rounds run so far.

Class 1

PosDriverCarPoints
1stGreg MessingerR3554
2ndCharles ParkR3543
3rdMichael DiguilmiV3618
4thMike ZunigaZ347
5thJeff KitchellZ327
6thRalph KitchellZ326
7thJohn StramotaR354

Class 2

PosDriverCarPoints
1stCarlos MartinezR3249
2ndJesse MartinezR3230
3rdBrian HendricksZ3316
4thMalko IzurietaZ3416
5thLuke LedermanZ3311
7thNic ReidZ337
8thLuis GuerreroS307
9thAchut ReddyRZ344

Class 3

PosDriverCarPoints
1stDaryk ArdenZ3364
2ndJohn ArdenZ3336
3rdJesse IwujiR3411
4thDylan BehnZ3311

Class 4

PosDriverCarPoints
1stJimmy BunnathS1416
2ndRaul FiletoB1316
3rdJesse LopezD2116
4thSandy IsaacS3011

All time

Lap records

The fastest lap set in each class, at each circuit the series runs.

Circuit Class 1Class 2 Class 3Class 4
Streets of Willow CW (pre-Reimagined)Charles Park R351:19.085 (04/30/22)Tom Wiebe V361:21.455 (10/30/21)Adam Xia Z331:23.765 (10/30/21)Taylor Chase S131:25.776 (10/30/21)
Streets of Willow CCW (pre-Reimagined)Charles Park R351:18.275 (11/25/23)Luke Lederman Z331:22.093 (02/11/23)Adam Xia Z331:21.724 (12/15/24)Brian Abad B141:25.875 (12/15/24)
Buttonwillow CW13Charles Park R351:51.798 (12/17/23)Jorge Torres Z331:55.163 (02/18/22)Daryk Aren Z331:58.468 (02/28/26)Taylor Chase S132:01.799 (12/18/21)
Buttonwillow CCW13Charles Park R352:03.394 (09/15/23)Michael Hilo Z331:58.249 (09/23/18)Adam Xia Z332:03.603 (01/30/22)Brian Abad B142:08.598 (09/17/23)
Buttonwillow CCW1Steven Chan R351:56.012 (09/24/17)Luke Lederman Z332:03.695 (09/18/22)Malko Izurieta Z342:12.360 (09/24/17)Edgar Ferman Z322:17.089 (09/18/16)
Chuck Walla Valley Raceway CWCharles Park R351:52.673 (03/19/23)Malko Izurieta Z341:57.436 (11/09/24)Adam Xia Z331:58.816 (11/09/24)Brian Abad B142:04.623 (11/22/25)
Chuck Walla Valley Raceway CCWCharles Park R351:53.750 (03/24/24)Chris Kirkland Z331:53.706 (03/24/24)Adam Xia Z331:57.648 (03/24/24)Edgar Ferman Z322:06.024 (03/24/24)
Auto Club RacewaySteven Chan R351:41.495 (10/06/18)Jorge Torres Z331:50.762 (10/03/21)Christopher Anderson Z331:51.876 (11/10/19)Taylor Chase S132:02.318 (10/03/21)
Willow Springs International RacewayCharles Park R351:25.708 (02/24/24)Jorge Torres Z331:28.887 (09/11/21)Adam Xia Z331:30.625 (02/24/24)Taylor Chase S131:37.364 (02/28/21)
Laguna SecaCharles Park R351:35.219 (12/07/25)Malko Izurieta Z341:39.875 (05/26/24)Adam Xia Z331:41.552 (05/26/24)Uly Fileto B131:49.728 (12/07/25)

Standings and records are published by the series and refresh on this page automatically. The full round-by-round sheets live at nissanchallenge.com.