NASCAR Cup 2018 Fontana
| Cla | # | Piloto | Fabricante | Voltas | Tempo | Diferença | Intervalo | Mph | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 78 | Martin Truex Jr. | Toyota | 1 | 38.592 | 186.567 | |||
| 2 | 18 | Kyle Busch | Toyota | 1 | 38.619 | 0.027 | 0.027 | 186.437 | |
| 3 | 42 | Kyle Larson | Chevrolet | 1 | 38.683 | 0.091 | 0.064 | 186.128 | |
| 4 | 20 | Erik Jones | Toyota | 1 | 38.700 | 0.108 | 0.017 | 186.047 | |
| 5 | 3 | Austin Dillon | Chevrolet | 1 | 38.770 | 0.178 | 0.070 | 185.711 | |
| 6 | 22 | Joey Logano | Ford | 1 | 38.798 | 0.206 | 0.028 | 185.577 | |
| 7 | 41 | Kurt Busch | Ford | 1 | 38.880 | 0.288 | 0.082 | 185.185 | |
| 8 | 12 | Ryan Blaney | Ford | 1 | 38.903 | 0.311 | 0.023 | 185.076 | |
| 9 | 31 | Ryan Newman | Chevrolet | 1 | 38.951 | 0.359 | 0.048 | 184.848 | |
| 10 | 4 | Kevin Harvick | Ford | 1 | 39.038 | 0.446 | 0.087 | 184.436 | |
| 11 | 2 | Brad Keselowski | Ford | 1 | 39.054 | 0.462 | 0.016 | 184.360 | |
| 12 | 37 | Chris Buescher | Chevrolet | 1 | 39.058 | 0.466 | 0.004 | 184.341 |