Race No. 19
Marlboro 500
Presented by Toyota
California Speedway — Fontana, California
October 30 - November 1, 1998
Friday/Saturday Practice
Combined Report
| pos | car | driver | chassis engine tire | laptime | gap to leader | gap to next | mph | km/h | 110% rule |
| 1 | 99 | Greg Moore | 98I/108E/F | 30.422 | 0.000 | 0.000 | 240.103 | 386.408 | n/a |
| 2 | 17 | Mauricio Gugelmin | 98I/108E/F | 30.760 | -0.338 | -0.338 | 237.464 | 382.162 | n/a |
| 3 | 8 | Bryan Herta | 98I/XD/F | 30.794 | -0.372 | -0.034 | 237.202 | 381.740 | 100.67% |
| 4 | 6 | Michael Andretti | 009.c/XD/G | 30.825 | -0.403 | -0.031 | 236.964 | 381.356 | 100.77% |
| 5 | 5 | Gil de Ferran | 98I/HRK/G | 30.836 | -0.414 | -0.011 | 236.879 | 381.220 | 100.80% |
| 6 | 7 | Bobby Rahal | 98I/XD/F | 30.858 | -0.436 | -0.022 | 236.710 | 380.948 | 100.88% |
| 7 | 27 | Dario Franchitti | 98I/HRK/F | 30.865 | -0.443 | -0.007 | 236.656 | 380.862 | 100.90% |
| 8 | 40 | Adrian Fernandez | 98I/XD/F | 30.877 | -0.455 | -0.012 | 236.564 | 380.714 | 100.94% |
| 9 | 26 | Paul Tracy | 98I/HRK/F | 30.885 | -0.463 | -0.008 | 236.503 | 380.615 | 100.96% |
| 10 | 18 | Mark Blundell | 98I/108E/F | 30.897 | -0.475 | -0.012 | 236.411 | 380.467 | 101.00% |
| 11 | 20 | Scott Pruett | 98I/XD/F | 30.922 | -0.500 | -0.025 | 236.220 | 380.160 | 101.09% |
| 12 | 10 | Richie Hearn | 009.c/XD/F | 30.961 | -0.539 | -0.039 | 235.923 | 379.681 | 101.21% |
| 13 | 12 | Jimmy Vasser | 98I/HRK/F | 30.978 | -0.556 | -0.017 | 235.793 | 379.472 | 101.27% |
| 14 | 1X | Alex Zanardi | 98I/HRK/F | 31.023 | -0.601 | -0.045 | 235.451 | 378.922 | 101.42% |
| 15 | 11X | Christian Fittipaldi | 009.c/XD/G | 31.088 | -0.666 | -0.065 | 234.959 | 378.130 | 101.63% |
| 16 | 24 | Robby Gordon | 98I/RV8C/F | 31.098 | -0.676 | -0.010 | 234.883 | 378.008 | 101.66% |
| 17 | 33 | Patrick Carpentier | 98I/108E/F | 31.163 | -0.741 | -0.065 | 234.393 | 377.220 | 101.87% |
| 18 | 1 | Alex Zanardi | 98I/HRK/F | 31.218 | -0.796 | -0.055 | 233.980 | 376.555 | 102.05% |
| 19 | 2 | Al Unser Jr. | P98/108E/G | 31.310 | -0.888 | -0.092 | 233.293 | 375.448 | 102.35% |
| 20 | 6X | Michael Andretti | 009.c/XD/G | 31.326 | -0.904 | -0.016 | 233.174 | 375.257 | 102.41% |
| 21 | 25 | Max Papis | 98I/RV8C/F | 31.365 | -0.943 | -0.039 | 232.884 | 374.790 | 102.53% |
| 22 | 9X | JJ Lehto (R) | 98I/108E/F | 31.454 | -1.032 | -0.089 | 232.225 | 373.730 | 102.82% |
| 23 | 36 | Alex Barron (R) | EA/RV8C/G | 31.575 | -1.153 | -0.121 | 231.335 | 372.297 | 103.22% |
| 24 | 3 | Andre Ribeiro | P98/108E/G | 31.638 | -1.216 | -0.063 | 230.874 | 371.556 | 103.43% |
| 25 | 99X | Greg Moore | 98I/108E/F | 31.690 | -1.268 | -0.052 | 230.495 | 370.946 | 103.60% |
| 26 | 16 | Helio Castro-Neves (R) | 98I/108E/G | 31.726 | -1.304 | -0.036 | 230.234 | 370.526 | 103.71% |
| 27 | 10X | Richie Hearn | 009.c/XD/F | 31.793 | -1.371 | -0.067 | 229.749 | 369.745 | 103.93% |
| 28 | 77 | Arnd Meier | 97I/XD/G | 31.969 | -1.547 | -0.176 | 228.484 | 367.709 | 104.51% |
| 29 | 98X | Vincenzo Sospiri | EA/RV8C/G | 31.972 | -1.550 | -0.003 | 228.462 | 367.675 | 104.52% |
| 30 | 9 | JJ Lehto (R) | 98I/108E/F | 32.043 | -1.621 | -0.071 | 227.956 | 366.860 | 104.75% |
| 31 | 11 | Christian Fittipaldi | 009.c/XD/G | 32.070 | -1.648 | -0.027 | 227.764 | 366.551 | 104.84% |
| 32 | 19 | Michel Jourdain Jr. | 98I/XD/F | 32.234 | -1.812 | -0.164 | 226.605 | 364.686 | 105.37% |
| 33 | 21X | Tony Kanaan (R) | 98I/HRK/F | 32.253 | -1.831 | -0.019 | 226.472 | 364.471 | 105.44% |
| 34 | 7X | Bobby Rahal | 98I/XD/F | 32.263 | -1.841 | -0.010 | 226.402 | 364.358 | 105.47% |
| 35 | 34 | Dennis Vitolo | 98I/XD/F | 32.394 | -1.972 | -0.131 | 225.486 | 362.885 | 105.90% |
| 36 | 3X | Andre Ribeiro | P98/108E/G | 32.455 | -2.033 | -0.061 | 225.062 | 362.203 | 106.10% |
| 37 | 77X | Arnd Meier | 97I/XD/G | 32.497 | -2.075 | -0.042 | 224.772 | 361.735 | 106.23% |
| 38 | 5X | Gil de Ferran | 98I/HRK/G | 32.512 | -2.090 | -0.015 | 224.668 | 361.568 | 106.28% |
| 39 | 21 | Tony Kanaan (R) | 98I/HRK/F | 32.558 | -2.136 | -0.046 | 224.350 | 361.057 | 106.43% |
| 40 | 25X | Max Papis | 98I/RV8C/F | 32.672 | -2.250 | -0.114 | 223.568 | 359.797 | 106.81% |
| 41 | 24X | Robby Gordon | 98I/RV8C/F | 32.718 | -2.296 | -0.046 | 223.253 | 359.291 | 106.96% |
| 42 | 36X | Alex Barron (R) | EA/RV8C/G | 32.812 | -2.390 | -0.094 | 222.614 | 358.262 | 107.26% |
| 43 | 8X | Bryan Herta | 98I/XD/F | 38.435 | -8.013 | -5.623 | 190.046 | 305.849 | 125.65% |