| Races | 7 | 5 | 5 | 17 | 11 | 6 | 25 | 6 | 5 | 87 |
|---|---|---|---|---|---|---|---|---|---|---|
| Class | Central | Great Lakes | Midwest | Northeast | Northern Pacific | Rocky Mountain | Southeast | Southern Pacific | Southwest | Total Class Entries |
| AS | 3 | 28 | 1 | 31 | 28 | 1 | 20 | 1 | 5 | 118 |
| ASR | 1 | 3 | 0 | 0 | 13 | 0 | 12 | 2 | 0 | 31 |
| B-Spec | 1 | 10 | 0 | 12 | 1 | 0 | 2 | 1 | 12 | 39 |
| BIT | 0 | 0 | 0 | 79 | 0 | 0 | 0 | 0 | 0 | 79 |
| CF | 0 | 0 | 0 | 29 | 6 | 15 | 29 | 2 | 0 | 81 |
| CFC | 1 | 9 | 0 | 14 | 0 | 0 | 0 | 0 | 0 | 24 |
| CFF | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 |
| CP1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 |
| DSR | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 8 |
| E1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 3 |
| E2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| E3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 7 |
| E30 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 3 |
| E5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 7 |
| EP | 4 | 16 | 2 | 65 | 20 | 9 | 60 | 5 | 5 | 186 |
| F4 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 0 | 0 | 13 |
| F5 | 8 | 6 | 4 | 21 | 1 | 0 | 17 | 0 | 2 | 59 |
| FA | 9 | 1 | 1 | 8 | 37 | 0 | 11 | 9 | 4 | 80 |
| FB | 1 | 1 | 2 | 8 | 5 | 0 | 19 | 0 | 0 | 36 |
| FC | 5 | 18 | 1 | 20 | 54 | 0 | 64 | 16 | 0 | 178 |
| FE | 6 | 5 | 0 | 9 | 3 | 0 | 6 | 0 | 0 | 29 |
| FE2 | 2 | 3 | 0 | 5 | 14 | 0 | 17 | 2 | 1 | 44 |
| FF | 11 | 8 | 1 | 27 | 55 | 8 | 87 | 7 | 1 | 205 |
| FFT | 0 | 0 | 0 | 0 | 20 | 0 | 0 | 4 | 0 | 24 |
| FM | 3 | 4 | 1 | 0 | 34 | 2 | 14 | 7 | 6 | 71 |
| FP | 9 | 7 | 3 | 39 | 3 | 1 | 48 | 2 | 11 | 123 |
| FS | 2 | 2 | 0 | 2 | 4 | 0 | 15 | 0 | 0 | 25 |
| FST | 8 | 16 | 5 | 8 | 0 | 0 | 0 | 0 | 0 | 37 |
| FV | 5 | 7 | 0 | 161 | 5 | 6 | 48 | 5 | 1 | 238 |
| GT1 | 13 | 10 | 1 | 25 | 8 | 1 | 41 | 2 | 3 | 104 |
| GT2 | 9 | 7 | 0 | 31 | 37 | 0 | 84 | 6 | 8 | 182 |
| GT3 | 1 | 1 | 2 | 2 | 7 | 0 | 26 | 4 | 1 | 44 |
| GTA | 0 | 3 | 0 | 16 | 1 | 0 | 59 | 0 | 2 | 81 |
| GTL | 2 | 8 | 2 | 8 | 8 | 0 | 20 | 0 | 0 | 48 |
| GTP | 0 | 0 | 0 | 16 | 0 | 0 | 0 | 0 | 0 | 16 |
| GTX | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0 | 4 |
| HP | 8 | 11 | 0 | 32 | 6 | 4 | 65 | 2 | 4 | 132 |
| HRG | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 |
| HRG1 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 3 |
| HRG2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 |
| HRG3 | 0 | 0 | 0 | 12 | 0 | 0 | 0 | 0 | 0 | 12 |
| HRG4 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 5 |
| HRG5 | 0 | 0 | 0 | 14 | 0 | 0 | 0 | 0 | 0 | 14 |
| IT7 | 0 | 3 | 1 | 39 | 0 | 0 | 47 | 0 | 0 | 90 |
| IT7R | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 7 |
| ITA | 12 | 50 | 1 | 112 | 139 | 0 | 120 | 4 | 2 | 440 |
| ITB | 1 | 6 | 1 | 85 | 0 | 7 | 44 | 0 | 0 | 144 |
| ITC | 0 | 31 | 0 | 5 | 0 | 0 | 18 | 0 | 0 | 54 |
| ITE | 0 | 6 | 2 | 39 | 30 | 1 | 6 | 5 | 2 | 91 |
| ITE1 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 |
| ITE2 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
| ITEO | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 2 |
| ITEU | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 3 |
| ITEZ | 0 | 0 | 0 | 13 | 0 | 0 | 7 | 0 | 0 | 20 |
| ITJ | 10 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 12 |
| ITO | 0 | 0 | 0 | 0 | 0 | 0 | 34 | 0 | 0 | 34 |
| ITR | 2 | 3 | 1 | 22 | 6 | 0 | 47 | 0 | 0 | 81 |
| ITS | 11 | 5 | 0 | 62 | 6 | 0 | 135 | 0 | 0 | 219 |
| ITT | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 |
| ITX | 0 | 0 | 0 | 0 | 46 | 0 | 2 | 0 | 0 | 48 |
| LC | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 1 | 4 |
| N3 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 |
| NCF | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 4 |
| NL | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 2 |
| P1 | 2 | 1 | 0 | 11 | 15 | 0 | 35 | 0 | 0 | 64 |
| P2 | 2 | 5 | 0 | 29 | 19 | 2 | 21 | 4 | 2 | 84 |
| PCA3 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 4 |
| Pro7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| R1 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 13 |
| R2 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 8 |
| S2 | 0 | 5 | 0 | 1 | 1 | 0 | 0 | 13 | 0 | 20 |
| S7 | 0 | 0 | 0 | 0 | 0 | 24 | 0 | 0 | 0 | 24 |
| S944 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 2 |
| SC | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 8 | 0 | 10 |
| SE46 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| SF | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 5 |
| SM | 73 | 96 | 5 | 376 | 106 | 9 | 459 | 49 | 53 | 1226 |
| SM2 | 0 | 0 | 0 | 100 | 0 | 0 | 0 | 0 | 0 | 100 |
| SM5 | 4 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 11 |
| SMG | 0 | 0 | 0 | 0 | 37 | 0 | 0 | 0 | 0 | 37 |
| SMSE | 0 | 0 | 0 | 0 | 0 | 0 | 89 | 0 | 0 | 89 |
| SMT | 29 | 0 | 0 | 3 | 164 | 0 | 0 | 7 | 0 | 203 |
| SMX | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 3 |
| SP | 0 | 4 | 0 | 0 | 17 | 2 | 0 | 5 | 4 | 32 |
| SP911 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 4 |
| SPM | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 4 |
| SPO | 13 | 0 | 0 | 22 | 3 | 0 | 37 | 0 | 0 | 75 |
| SPU | 5 | 1 | 0 | 14 | 3 | 0 | 35 | 0 | 0 | 58 |
| SRF | 33 | 5 | 2 | 63 | 71 | 1 | 54 | 0 | 1 | 230 |
| SRF3 | 87 | 80 | 3 | 241 | 208 | 6 | 162 | 40 | 32 | 859 |
| SRX7 | 0 | 0 | 0 | 15 | 0 | 0 | 0 | 0 | 4 | 19 |
| SS | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 7 |
| SSC | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 |
| SSC5 | 0 | 0 | 0 | 0 | 16 | 0 | 0 | 0 | 0 | 16 |
| SSM | 0 | 0 | 0 | 271 | 65 | 0 | 23 | 1 | 0 | 360 |
| STL | 13 | 23 | 5 | 162 | 21 | 3 | 153 | 13 | 15 | 408 |
| STO | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| STU | 8 | 12 | 3 | 27 | 9 | 1 | 98 | 15 | 2 | 175 |
| T1 | 3 | 15 | 0 | 32 | 21 | 8 | 20 | 5 | 2 | 106 |
| T2 | 13 | 3 | 0 | 23 | 2 | 0 | 12 | 0 | 5 | 58 |
| T3 | 20 | 1 | 1 | 41 | 4 | 4 | 46 | 4 | 6 | 127 |
| T4 | 12 | 3 | 1 | 27 | 4 | 0 | 43 | 1 | 8 | 99 |
| VFSR | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 4 |
| VIN | 27 | 0 | 0 | 0 | 0 | 0 | 56 | 0 | 0 | 83 |
| Vintage | 22 | 0 | 0 | 0 | 0 | 0 | 16 | 0 | 0 | 38 |
| VP1 | 0 | 0 | 0 | 0 | 12 | 0 | 0 | 0 | 0 | 12 |
| VP2 | 0 | 0 | 0 | 0 | 14 | 0 | 0 | 0 | 0 | 14 |
| VP3 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 5 |
| Total (Average) | 539 (77) | 545 (109) | 53 (10.6) | 2548 (149.9) | 1470 (133.6) | 126 (21) | 2625 (105) | 272 (45.3) | 205 (41) | 8383 (96.4) |