Race No. 19
Marlboro 500
Presented by Toyota
California Speedway — Fontana, California
October 30 - November 1, 1998
Saturday Individual Practice 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 | 26 | Paul Tracy | 98I/HRK/F | 30.885 | -0.463 | -0.020 | 236.503 | 380.615 | 100.96% |
| 9 | 18 | Mark Blundell | 98I/108E/F | 30.897 | -0.475 | -0.012 | 236.411 | 380.467 | 101.00% |
| 10 | 20 | Scott Pruett | 98I/XD/F | 30.922 | -0.500 | -0.025 | 236.220 | 380.160 | 101.09% |
| 11 | 40 | Adrian Fernandez | 98I/XD/F | 30.932 | -0.510 | -0.010 | 236.144 | 380.037 | 101.12% |
| 12 | 10 | Richie Hearn | 009.c/XD/F | 30.961 | -0.539 | -0.029 | 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 | 2 | Al Unser Jr. | P98/108E/G | 31.310 | -0.888 | -0.147 | 233.293 | 375.448 | 102.35% |
| 19 | 25 | Max Papis | 98I/RV8C/F | 31.365 | -0.943 | -0.055 | 232.884 | 374.790 | 102.53% |
| 20 | 9X | JJ Lehto (R) | 98I/108E/F | 31.454 | -1.032 | -0.089 | 232.225 | 373.730 | 102.82% |
| 21 | 36 | Alex Barron (R) | EA/RV8C/G | 31.575 | -1.153 | -0.121 | 231.335 | 372.297 | 103.22% |
| 22 | 3 | Andre Ribeiro | P98/108E/G | 31.638 | -1.216 | -0.063 | 230.874 | 371.556 | 103.43% |
| 23 | 1 | Alex Zanardi | 98I/HRK/F | 31.690 | -1.268 | -0.052 | 230.495 | 370.946 | 103.60% |
| 24 | 99X | Greg Moore | 98I/108E/F | 31.690 | -1.268 | 0.000 | 230.495 | 370.946 | 103.60% |
| 25 | 16 | Helio Castro-Neves (R) | 98I/108E/G | 31.726 | -1.304 | -0.036 | 230.234 | 370.526 | 103.71% |
| 26 | 6X | Michael Andretti | 009.c/XD/G | 31.782 | -1.360 | -0.056 | 229.828 | 369.873 | 103.90% |
| 27 | 77 | Arnd Meier | 97I/XD/G | 31.969 | -1.547 | -0.187 | 228.484 | 367.709 | 104.51% |
| 28 | 98X | Vincenzo Sospiri | EA/RV8C/G | 31.972 | -1.550 | -0.003 | 228.462 | 367.675 | 104.52% |
| 29 | 11 | Christian Fittipaldi | 009.c/XD/G | 32.070 | -1.648 | -0.098 | 227.764 | 366.551 | 104.84% |
| 30 | 34 | Dennis Vitolo | 98I/XD/F | 32.394 | -1.972 | -0.324 | 225.486 | 362.885 | 105.90% |
| 31 | 21X | Tony Kanaan (R) | 98I/HRK/F | 32.595 | -2.173 | -0.201 | 224.096 | 360.647 | 106.55% |
| 32 | 3X | Andre Ribeiro | P98/108E/G | 33.008 | -2.586 | -0.413 | 221.292 | 356.135 | 107.90% |
| 33 | 19 | Michel Jourdain Jr. | 98I/XD/F | 36.286 | -5.864 | -3.278 | 201.301 | 323.962 | 118.62% |