Chief of Timing & Scoring May 15, 2021          
Class Track Config Race Lap Record By Bike Info Date
350 Superbike Buttonwillow 3.10 mi 01:58.544 Nobi Iso Yamaha R3 10/22/17
  Sonoma 2.22 mi 01:51.421 Ari Henning KTM RC 390 04/30/17
  Thunderhill 3.10 mi 02:02.536 Brett Voorhees Yamaha YZF R3 10/21/18
             
350 SuperStock Buttonwillow 3.10 mi 01:58.901 Marc Edwards Yamaha R3 10/21/17
  Sonoma 2.22 mi 01:51.961 Brett Voorhees Yamaha YZF-R3 09/02/17
  Thunderhill 3.10 mi 02:03.976 Brenden Ketelsen Yamaha R3 10/20/18
             
400 Superbike Buttonwillow 3.10 mi 01:56.292 Marc Edwards Kawasaki EX400 04/14/19
  Sonoma 2.22 mi 01:48.419 Marc Edwards Kawasaki EX400 09/01/19
  Thunderhill 3.10 mi 01:55.237 Rocco Landers Kawasaki Ninja 400R 07/28/19
             
450 Superbike Buttonwillow 3.10 mi 01:53.880 Rocco Landers Kawasaki Ninja 400R 03/17/19
  Sonoma 2.22 mi 01:48.192 Patryk Buchcik Suzuki GSX-R 450 09/04/16
  Thunderhill 3.10 mi 01:56.821 Rocco Landers Kawasaki Ninja 400R 07/28/19
             
450 SuperStock Buttonwillow 3.10 mi 01:55.248 Aden Thao Kawasaki Ninja 400 04/25/21
  Sonoma 2.22 mi 01:48.429 Dave Moss Yamaha R450 09/02/18
  Thunderhill 3.10 mi 01:57.772 Ian Smith Kawasaki ZX477 10/20/19
             
500 SuperStock Buttonwillow 3.10 mi 01:54.782 Patryk Buchcik Yamaha R450 04/25/21
  Sonoma 2.22 mi        
  Thunderhill 3.10 mi 02:04.785 Brian Bartlow Kawasaki ZX636 09/20/20
             
600 Superbike Buttonwillow 3.10 mi 01:44.718 Bryce Prince Yamaha R6 03/17/19
  Sonoma 2.22 mi 01:39.440 Valentin Debise Kawasaki 636 09/01/19
  Thunderhill 3.10 mi 01:49.116 Deion Campbell Yamaha R6 10/21/18
             
600 SuperStock Buttonwillow 3.10 mi 01:45.833 Deion Campbell Yamaha YZF-R6 10/23/16
  Sonoma 2.22 mi 01:39.153 Valentin Debise Kawasaki 636 09/01/19
  Thunderhill 3.10 mi 01:48.165 Valentin Debise Kawasaki 636 10/20/19
             
750 Superbike Buttonwillow 3.10 mi 01:47.290 Andy DiBrino Yamaha YZF-R6 10/23/16
  Sonoma 2.22 mi 01:42.690 Brandon Crawford Yamaha R6 05/01/16
  Thunderhill 3.10 mi 01:52.259 Brandon Crawford Yamaha R6 10/01/16
             
750 SuperStock Buttonwillow 3.10 mi 01:47.150 Braeden Ortt Yamaha R6 03/19/17
  Sonoma 2.22 mi 01:41.569 Andrew Lee Yamaha YZF-R6 09/04/16
  Thunderhill 3.10 mi 01:51.504 Ezra Beaubier Yamaha YZF-R6 10/02/16
             
Afemme  Buttonwillow 3.10 mi 01:52.946 Melissa Paris Yamaha YZF-R1 07/18/20
  Sonoma 2.22 mi 01:47.476 Joy Higa Suzuki GSX-R 1000 09/03/16
  Thunderhill 3.10 mi 01:55.487 Joy Higa Suzuki GSX-R 1000 10/01/16
             
Afemme LT Buttonwillow 3.10 mi 02:01.572 Krissie Coseteng Kawasaki Ninja 400 08/08/20
  Sonoma 2.22 mi 02:03.691 Jennifer Lauritzen Kawasaki Ninja 400 09/01/18
  Thunderhill 3.10 mi 02:11.810 Shiree Kano Kawasaki Ninja 300 07/27/19
             
CSRA Buttonwillow 3.10 mi 02:05.189 Mark McKinney Suzuki GS750E 03/20/21
  Sonoma 2.22 mi        
  Thunderhill 3.10 mi 02:11.387 Mark Hoyt KZ750 09/19/20
             
Formula 40 Heavyweight Buttonwillow 3.10 mi 01:47.228 Cory Call BMW S1000 04/14/18
  Sonoma 2.22 mi 01:41.791 Jason Lauritzen Kawasaki ZX-10R 09/02/17
  Thunderhill 3.10 mi 01:49.331 Cory Call BMW S1000 07/15/17
             
Formula 40 Lightweight Buttonwillow 3.10 mi 01:53.393 Bradley Champion Suzuki SV 650 10/21/17
  Sonoma 2.22 mi 01:45.148 Bradley Champion Suzuki SV 650 04/29/17
  Thunderhill 3.10 mi 01:55.529 Bradley Champion Suzuki SV 650 10/01/16
             
Formula 40 Middleweight Buttonwillow 3.10 mi 01:50.298 Stephen Rue Yamaha R6 08/08/20
  Sonoma 2.22 mi 01:43.247 Berto Wooldridge Yamaha YZF-R6 08/31/19
  Thunderhill 3.10 mi 01:52.751 Stephen Rue Yamaha R6 07/07/18
             
Formula 50 Buttonwillow 3.10 mi 01:51.642 Harm Jansen Yamaha R6 07/18/20
  Sonoma 2.22 mi 01:45.347 Eric Gulbransen KTM 1290 Superduke 08/31/19
  Thunderhill 3.10 mi 01:54.134 Eric Gulbransen KTM 1290 Superduke 07/07/18
             
Formula I Buttonwillow 3.10 mi 01:45.723 Rocco Landers Yamaha R6 04/25/21
  Sonoma 2.22 mi 01:40.708 Brandon Crawford Yamaha R6 09/02/18
  Thunderhill 3.10 mi 01:47.761 Valentin Debise Kawasaki 636 10/20/19
             
Formula II Buttonwillow 3.10 mi 01:56.100 Ralph Staropoli Honda RS250R 04/14/19
  Sonoma 2.22 mi 01:47.598 Kevin Winter Yamaha TZ250 09/04/16
  Thunderhill 3.10 mi 01:59.382 Roger Baker Yamaha TZ250 05/29/16
             
Formula III Buttonwillow 3.10 mi 01:54.664 Rocco Landers Kawasaki Ninja 400R 03/17/19
  Sonoma 2.22 mi 01:46.903 Marc Edwards Kawasaki EX400 09/01/19
  Thunderhill 3.10 mi 01:56.258 Rocco Landers Kawasaki Ninja 400R 07/28/19
             
Formula IV Buttonwillow 3.10 mi 01:52.511 Bradley Champion Suzuki SV 650 10/22/17
  Sonoma 2.22 mi 01:44.452 Bradley Champion Suzuki SV 650 04/30/17
  Thunderhill 3.10 mi 01:55.868 Brandon Crawford Kawasaki Ninja 650 07/28/19
             
Formula Pacific Buttonwillow 3.10 mi 01:43.067 Jayson Uribe Suzuki GSXR 1000 03/21/21
  Sonoma 2.22 mi 01:38.123 Tyler Ohara Kawasaki ZX-10R 09/03/17
  Thunderhill 3.10 mi 01:46.871 Andrew Lee Kawasaki ZX-10R 07/28/19
             
Formula Singles Buttonwillow 3.10 mi 01:58.290 Troy Siahaan Kramer EVO 2 04/25/21
  Sonoma 2.22 mi 01:51.390 Ari Henning KTM RC 390 04/30/17
  Thunderhill 3.10 mi 02:02.904 Mark Fitzsimmons Honda NSF250R 07/16/17
             
Legacy 250 Buttonwillow 3.10 mi 02:08.563 Jordan Edginton Kawasaki Ninja 250 03/17/19
  Sonoma 2.22 mi 01:58.910 Brian Bartlow Kawasaki Ninja 250 09/02/18
  Thunderhill 3.10 mi 02:09.721 Jordan Edginton Kawasaki Ninja 250 05/27/18
             
Legacy Heavyweight Buttonwillow 3.10 mi 01:50.294 Xavier Zayat Suzuki GSX-R 600 03/20/16
  Sonoma 2.22 mi 01:44.621 Benjamin Hodges Suzuki GSX-R 1000 09/03/17
  Thunderhill 3.10 mi 01:53.002 Nathan Rodriguez Suzuki GSX-R 1000 06/26/16
             
Legacy Lightweight Buttonwillow 3.10 mi 01:55.497 Jordan Edginton Suzuki SV 650 04/14/19
  Sonoma 2.22 mi 01:49.667 Justus Hoffman Ducati 649 09/04/16
  Thunderhill 3.10 mi 01:58.130 Jordan Edginton Suzuki SV 650 07/28/19
             
Legacy Middleweight Buttonwillow 3.10 mi 01:51.153 Xavier Zayat Suzuki GSX-R 600 03/20/16
  Sonoma 2.22 mi 01:44.861 Steve Habura Suzuki GSX-R 750 09/03/17
  Thunderhill 3.10 mi 01:54.604 Jesse Carter Suzuki GSX-R 750 09/24/17
             
Lightweight Superbike Buttonwillow 3.10 mi 01:53.844 Jordan Edginton Suzuki SV 650 04/14/19
  Sonoma 2.22 mi 01:47.094 Aaron Tulchinsky Yamaha FZ07 09/01/19
  Thunderhill 3.10 mi 01:55.889 Brandon Crawford Kawasaki Ninja 650 07/28/19
             
Lightweight Twins Buttonwillow 3.10 mi 01:54.258 Rocco Landers Kawasaki Ninja 400R 04/14/19
  Sonoma 2.22 mi 01:48.008 Marc Edwards Kawasaki EX400 09/01/19
  Thunderhill 3.10 mi 01:55.760 Marc Edwards Kawasaki EX400 07/28/19
             
Open GP Buttonwillow 3.10 mi 01:43.347 Jayson Uribe Suzuki GSXR 1000 03/21/21
  Sonoma 2.22 mi 01:39.171 Cory Call BMW S1000 09/03/17
  Thunderhill 3.10 mi 01:46.918 Jayson Uribe Honda CBR 1000RR 06/30/19
             
Open Superbike Buttonwillow 3.10 mi 01:43.497 Cameron Peterson Yamaha 1000 03/17/19
  Sonoma 2.22 mi 01:37.947 Andrew Lee Kawasaki ZX-10R 09/01/19
  Thunderhill 3.10 mi 01:46.748 Jayson Uribe Honda CBR 1000RR 06/30/19
             
Open SuperStock Buttonwillow 3.10 mi 01:44.365 Joey Pascarella Kawasaki ZX-10R 10/23/16
  Sonoma 2.22 mi 01:38.337 Tyler Ohara Kawasaki ZX-10R 09/03/17
  Thunderhill 3.10 mi 01:47.321 Andrew Lee Kawasaki ZX-10R 10/21/18
             
Open Twins Buttonwillow 3.10 mi 01:49.973 Chris Filmore KTM 1290 Superduke 03/19/17
  Sonoma 2.22 mi 01:43.282 Chris Fillmore BMW S1000RR 09/04/16
  Thunderhill 3.10 mi 01:53.853 Jade Oliver Ducati 1199 Panigale 07/08/19
             
Super Dino Buttonwillow 3.10 mi 01:50.387 Benjamin Hodges Suzuki GSX-R 1000 04/14/19
  Sonoma 2.22 mi 01:46.048 Benjamin Hodges Suzuki GSX-R 1000 09/02/18
  Thunderhill 3.10 mi 01:54.229 Benjamin Hodges Suzuki GSX-R 1000 09/24/17
             
Vintage Buttonwillow 3.10 mi 02:00.138 Edwin Haazer Kawasaki KZ1000 MKII 04/15/18
  Sonoma 2.22 mi 01:57.991 Kevin McKee Kawasaki Z1 09/01/19
  Thunderhill 3.10 mi 02:07.052 Edwin Haazer Kawasaki KZ 1000 MKII 06/17/18
             
Discontinued Classes            
400 SuperStock Buttonwillow 3.10 mi 01:54.524 Rocco Landers Kawasaki Ninja 400R 04/13/19
  Sonoma 2.22 mi 01:48.038 Patryk Buchcik Suzuki GSX-R 450 09/04/16
  Thunderhill 3.10 mi 01:57.916 Rocco Landers Kawasaki Ninja 400R 07/27/19
             
Calishine Racing Ninja Cup Buttonwillow 3.10 mi 01:55.409 Marc Edwards Kawasaki EX400 04/14/19
  Sonoma 2.22 mi 01:47.983 Marc Edwards Kawasaki EX400 09/01/19
  Thunderhill 3.10 mi 01:56.607 Rocco Landers Kawasaki Ninja 400R 07/28/19
             
Middleweight Singles & Twins Buttonwillow 3.10 mi 01:53.064 Bradley Champion Suzuki SV 650 10/22/17
  Sonoma 2.22 mi 01:45.463 Bradley Champion Suzuki SV 650 04/30/17
  Thunderhill 3.10 mi 01:57.010 Bradley Champion Suzuki SV 650 05/29/16
             
300 World SuperSport Buttonwillow 3.10 mi 01:58.179 Ashlee Deskin Yamaha R3 04/14/19
  Sonoma 2.22 mi 01:52.302 Marc Edwards Yamaha R3 09/02/18
  Thunderhill 3.10 mi 02:02.960 Brenden Ketelsen Yamaha R3 10/21/18