Formula 3 - 700 Twins, Formula 4 Lightweight, Formula 5 Ultra Lightweight

Race · Buttonwillow Raceway Circuit · October 25, 2025 · American Federation of Motorcyclists Official

Pos

No.

Rider

Class

Laps

Total time

Best

Best mph

Diff

1

850

Luke Hiesterman

F3 700 TW E ★

8

15:20.797

01:53.407

81.265

—

Lap	Time	+/- best	mph	Pos
1	1:59.147	5.740	77.35	1
2	1:54.700	1.293	80.349	1
3	1:53.407	0.000	81.265	1
4	1:53.553	0.146	81.16	1
5	1:55.015	1.608	80.129	1
6	1:53.549	0.142	81.163	1
7	1:54.162	0.755	80.727	1
8	1:54.878	1.471	80.224	1

2

616R

Sawyer Lafayette

F4 LT E ★

8

15:31.286

01:50.694

83.257

10.489

Lap	Time	+/- best	mph	Pos
1	1:53.780	3.086	80.998	5
2	1:52.280	1.586	82.081	5
3	1:51.794	1.100	82.437	4
4	1:51.505	0.811	82.651	4
5	1:51.698	1.004	82.508	4
6	1:52.335	1.641	82.04	3
7	1:51.172	0.478	82.899	2
8	1:50.694	0.000	83.257	2

3

8

Alex George

F4 LT E P2

8

15:32.070

01:51.237

82.85

11.273

Lap	Time	+/- best	mph	Pos
1	1:53.495	2.258	81.202	4
2	1:52.459	1.222	81.95	4
3	1:51.776	0.539	82.451	3
4	1:51.492	0.255	82.661	3
5	1:51.691	0.454	82.513	3
6	1:52.387	1.150	82.002	2
7	1:51.469	0.232	82.678	3
8	1:51.237	0.000	82.85	3

4

50

Jason Diaz

F3 700 TW E P2

8

15:49.452

01:57.287

78.576

28.655

Lap	Time	+/- best	mph	Pos
1	2:0.626	3.339	76.401	2
2	1:57.576	0.289	78.383	2
3	1:57.684	0.397	78.311	2
4	1:58.726	1.439	77.624	2
5	1:58.755	1.468	77.605	2
6	1:57.287	0.000	78.576	4
7	1:58.512	1.225	77.764	4
8	1:57.641	0.354	78.34	4

5

29

Brian Bartlow

F4 LT E P3

8

16:17.608

01:55.974

79.466

56.811

Lap	Time	+/- best	mph	Pos
1	1:59.094	3.120	77.384	6
2	1:56.799	0.825	78.905	6
3	1:57.362	1.388	78.526	6
4	1:59.813	3.839	76.92	5
5	1:58.134	2.160	78.013	5
6	1:57.986	2.012	78.111	5
7	1:55.974	0.000	79.466	5
8	1:56.364	0.390	79.2	5

6

913

Bodie Kaiser

F4 LT N ★

8

16:18.464

01:56.362

79.201

57.667

Lap	Time	+/- best	mph	Pos
1	2:1.182	4.820	76.051	8
2	1:58.146	1.784	78.005	8
3	1:57.947	1.585	78.137	7
4	1:57.366	1.004	78.524	6
5	1:56.899	0.537	78.837	6
6	1:57.506	1.144	78.43	6
7	1:56.580	0.218	79.053	6
8	1:56.362	0.000	79.201	6

7

432R

Mario Estrada

F4 LT N P2

8

16:23.434

01:56.561

79.066

01:02.637

Lap	Time	+/- best	mph	Pos
1	2:0.927	4.366	76.211	7
2	1:58.324	1.763	77.888	7
3	1:58.310	1.749	77.897	8
4	1:59.291	2.730	77.256	8
5	1:58.429	1.868	77.819	7
6	1:57.818	1.257	78.222	7
7	1:57.403	0.842	78.499	7
8	1:56.561	0.000	79.066	7

8

933

Ethan Mellberg

F4 LT N P3

8

16:36.976

01:57.756

78.264

01:16.179

Lap	Time	+/- best	mph	Pos
1	2:2.456	4.700	75.26	9
2	1:58.317	0.561	77.892	9
3	1:57.756	0.000	78.264	9
4	1:58.236	0.480	77.946	9
5	2:2.104	4.348	75.477	8
6	1:59.344	1.588	77.222	8
7	2:0.561	2.805	76.443	8
8	2:1.492	3.736	75.857	8

9

89

Dylan Benjamin

F4 LT E P4

8

16:46.088

02:00.012

76.792

01:25.291

Lap	Time	+/- best	mph	Pos
1	2:4.404	4.392	74.081	11
2	2:0.355	0.343	76.573	11
3	2:0.639	0.627	76.393	10
4	2:0.012	0.000	76.792	10
5	2:0.664	0.652	76.377	10
6	2:1.028	1.016	76.148	9
7	2:0.502	0.490	76.48	9
8	2:0.041	0.029	76.774	9

10

425

Keyi Ren

F4 LT N P4

8

16:52.403

02:00.293

76.613

01:31.606

Lap	Time	+/- best	mph	Pos
1	2:4.572	4.279	73.981	10
2	2:0.293	0.000	76.613	10
3	2:2.367	2.074	75.314	11
4	2:0.451	0.158	76.512	11
5	2:1.155	0.862	76.068	11
6	2:1.362	1.069	75.938	11
7	2:2.135	1.842	75.457	10
8	2:2.364	2.071	75.316	10

11

321

Jeremy Friedman

F3 700 TW E P3

8

16:59.060

02:05.465

73.455

01:38.263

Lap	Time	+/- best	mph	Pos
1	2:9.178	3.713	71.343	3
2	2:6.334	0.869	72.949	3
3	2:7.539	2.074	72.26	5
4	2:6.887	1.422	72.632	7
5	2:6.742	1.277	72.715	9
6	2:6.721	1.256	72.727	10
7	2:5.465	0.000	73.455	11
8	2:7.345	1.880	72.37	11

12

930

Aaron Pigeon

F4 LT N P5

8

17:07.674

02:02.354

75.322

01:46.877

Lap	Time	+/- best	mph	Pos
1	2:7.900	5.546	72.056	12
2	2:3.870	1.516	74.401	12
3	2:4.155	1.801	74.23	12
4	2:2.724	0.370	75.095	12
5	2:3.059	0.705	74.891	12
6	2:3.262	0.908	74.768	12
7	2:3.010	0.656	74.921	12
8	2:2.354	0.000	75.322	12

13

818

Aaron Cohn

F5 ULT E ★

8

17:08.202

01:59.060

77.406

01:47.405

Lap	Time	+/- best	mph	Pos
1	2:1.812	2.752	75.658	16
2	1:59.142	0.082	77.353	16
3	1:59.074	0.014	77.397	15
4	1:59.421	0.361	77.172	15
5	2:1.159	2.099	76.065	13
6	1:59.060	0.000	77.406	13
7	1:59.617	0.557	77.046	13
8	1:59.467	0.407	77.143	13

14

741

Izaiah Thigpen

F5 ULT N ★

8

17:22.770

01:59.961

76.825

02:01.973

Lap	Time	+/- best	mph	Pos
1	2:2.814	2.853	75.04	17
2	1:59.961	0.000	76.825	17
3	2:0.417	0.456	76.534	18
4	2:1.373	1.412	75.931	16
5	2:1.462	1.501	75.876	16
6	2:3.396	3.435	74.686	15
7	2:1.633	1.672	75.769	14
8	2:2.292	2.331	75.361	14

15

247

Nolan Leupp

F5 ULT E P2

7

15:21.731

02:00.533

76.46

+1 lap

Lap	Time	+/- best	mph	Pos
1	2:5.078	4.545	73.682	19
2	2:1.111	0.578	76.095	19
3	2:0.817	0.284	76.281	19
4	2:1.259	0.726	76.003	17
5	2:1.055	0.522	76.131	17
6	2:0.533	0.000	76.46	17
7	2:1.823	1.290	75.651	15

16

704

Atsushi Sumiya

F5 ULT E P3

7

15:24.689

02:00.774

76.308

+1 lap

Lap	Time	+/- best	mph	Pos
1	2:5.271	4.497	73.569	20
2	2:2.169	1.395	75.436	20
3	2:0.774	0.000	76.308	20
4	2:1.500	0.726	75.852	18
5	2:1.638	0.864	75.766	18
6	2:1.426	0.652	75.898	18
7	2:1.985	1.211	75.55	16

17

893

Mark McKinney

F4 LT E P5

7

15:25.099

02:05.897

73.203

+1 lap

Lap	Time	+/- best	mph	Pos
1	2:7.624	1.727	72.212	13
2	2:5.897	0.000	73.203	13
3	2:6.019	0.122	73.132	13
4	2:7.079	1.182	72.522	13
5	2:7.234	1.337	72.433	14
6	2:6.901	1.004	72.624	14
7	2:6.402	0.505	72.91	17

18

975

Philip Burkhardt

F4 LT N P6

7

15:26.226

02:04.766

73.866

+1 lap

Lap	Time	+/- best	mph	Pos
1	2:9.663	4.897	71.077	14
2	2:4.766	0.000	73.866	14
3	2:8.032	3.266	71.982	14
4	2:6.636	1.870	72.776	14
5	2:6.560	1.794	72.819	15
6	2:6.226	1.460	73.012	16
7	2:6.749	1.983	72.711	18

19

971

Michael Stapler

F5 ULT N P2

7

15:46.313

02:03.400

74.684

+1 lap

Lap	Time	+/- best	mph	Pos
1	2:8.442	5.042	71.752	22
2	2:4.849	1.449	73.817	21
3	2:4.374	0.974	74.099	21
4	2:5.688	2.288	73.324	20
5	2:4.825	1.425	73.831	20
6	2:4.338	0.938	74.121	20
7	2:3.400	0.000	74.684	19

20

968

Joe Keating

F4 LT N P7

7

15:48.218

02:08.615

71.656

+1 lap

Lap	Time	+/- best	mph	Pos
1	2:12.447	3.832	69.583	15
2	2:11.662	3.047	69.997	15
3	2:9.835	1.220	70.982	16
4	2:9.214	0.599	71.324	19
5	2:9.330	0.715	71.26	19
6	2:8.615	0.000	71.656	19
7	2:9.481	0.866	71.176	20

21

83

Pao Vang

F5 ULT E P4

7

15:59.144

02:06.095

73.088

+1 lap

Lap	Time	+/- best	mph	Pos
1	2:8.397	2.302	71.777	21
2	2:6.852	0.757	72.652	22
3	2:6.095	0.000	73.088	22
4	2:7.272	1.177	72.412	21
5	2:6.464	0.369	72.874	21
6	2:7.030	0.935	72.55	21
7	2:6.776	0.681	72.695	21

22

922

Adam Thiesen

F5 ULT N P3

7

15:59.416

02:06.121

73.073

+1 lap

Lap	Time	+/- best	mph	Pos
1	2:8.383	2.262	71.785	23
2	2:6.408	0.287	72.907	23
3	2:6.121	0.000	73.073	23
4	2:7.439	1.318	72.317	22
5	2:6.909	0.788	72.619	22
6	2:6.792	0.671	72.686	22
7	2:6.486	0.365	72.862	22

23

712

Nicholas Renoni

F5 ULT E

3

07:12.500

01:59.290

77.257

DNF

Lap	Time	+/- best	mph	Pos
1	2:3.948	4.658	74.354	18
2	1:59.659	0.369	77.019	18
3	1:59.290	0.000	77.257	17

24

769

Hung Yui Lo

F5 ULT E

0

00.000

00.000

0

DNS

25

67

Derek Powell

F4 LT E

0

00.000

00.000

0

DNS

26

104

Vicky Zeng

F4 LT E

0

00.000

00.000

0

DNS

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