| Similarity | Rank | |
|---|---|---|
| NHRA | 0.842 | 58184 |
| DIRTcar | 0.803 | 85785 |
| SCCA | 0.801 | 71535 |
| IndyCar | 0.794 | 47626 |
| NASCAR's | 0.790 | 87171 |
| ALMS | 0.789 | 75392 |
| NASCAR | 0.785 | 16844 |
| Motorsports | 0.766 | 31301 |
| Penske | 0.760 | 61632 |
| Speedway | 0.752 | 19450 |
| IZOD | 0.749 | 96371 |
| WRC | 0.746 | 53363 |
| USATF | 0.744 | 86386 |
| Racing | 0.743 | 9023 |
| Kinser | 0.742 | 87078 |
| Outlaws | 0.739 | 52413 |
| Can-Am | 0.738 | 87367 |
| Supercross | 0.724 | 74405 |
| Sebring | 0.723 | 53672 |
| Midget | 0.712 | 66277 |
| FIA | 0.712 | 37628 |
| Autosport | 0.709 | 97481 |
| Racing's | 0.709 | 80411 |
| Kahne | 0.709 | 93904 |
| Raceway | 0.709 | 32758 |