2004 Roger Penske Indy Racing League IndyCar Series statistics
| Race # | Track | Driver | Start | Finish | Car # | Sponsor | Chassis | Engine | Tire | Qualifying Speed | Laps | X Led | Laps Led | Status | Money | Points |
| 1 | Homestead | Sam Hornish, Jr. | 7 | 1 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 216.322 | 200 | 4 | 6 | running | 115800 | 50 |
| 1 | Homestead | Hélio Castroneves | 10 | 2 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 215.887 | 200 | 4 | 85 | running | 112350 | 43 |
| 2 | Phoenix | Hélio Castroneves | 3 | 6 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 174.168 | 200 | 0 | 0 | running | 48600 | 28 |
| 2 | Phoenix | Sam Hornish, Jr. | 4 | 15 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 173.945 | 195 | 1 | 4 | running | 37900 | 15 |
| 3 | Motegi | Hélio Castroneves | 15 | 3 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 203.281 | 200 | 1 | 4 | running | 104650 | 35 |
| 3 | Motegi | Sam Hornish, Jr. | 7 | 19 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 204.890 | 87 | 0 | 0 | accident | 48600 | 12 |
| 4 | Indianapolis | Hélio Castroneves | 8 | 9 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 220.882 | 180 | 0 | 0 | running | 311990 | 22 |
| 4 | Indianapolis | Sam Hornish, Jr. | 11 | 26 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 220.180 | 104 | 1 | 9 | accident | 223240 | 10 |
| 5 | Texas | Sam Hornish, Jr. | 11 | 4 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 207.319 | 200 | 1 | 1 | running | 56500 | 32 |
| 5 | Texas | Hélio Castroneves | 6 | 12 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 207.994 | 197 | 1 | 2 | running | 39600 | 18 |
| 6 | Richmond | Hélio Castroneves | 1 | 3 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 171.202 | 250 | 1 | 37 | running | 79700 | 35 |
| 6 | Richmond | Sam Hornish, Jr. | 4 | 13 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 170.623 | 246 | 1 | 76 | running | 48500 | 17 |
| 7 | Kansas | Hélio Castroneves | 6 | 7 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 209.120 | 200 | 1 | 2 | running | 45800 | 26 |
| 7 | Kansas | Sam Hornish, Jr. | 4 | 8 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 209.262 | 199 | 1 | 3 | running | 44600 | 24 |
| 8 | Nashville (IRL) | Sam Hornish, Jr. | 9 | 2 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 199.003 | 200 | 0 | 0 | running | 82900 | 40 |
| 8 | Nashville (IRL) | Hélio Castroneves | 11 | 3 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 198.801 | 200 | 0 | 0 | running | 69600 | 35 |
| 9 | Milwaukee | Sam Hornish, Jr. | 4 | 3 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 168.258 | 225 | 2 | 34 | running | 69600 | 35 |
| 9 | Milwaukee | Hélio Castroneves | 5 | 12 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 168.093 | 222 | 2 | 26 | running | 49600 | 18 |
| 10 | Michigan | Sam Hornish, Jr. | 4 | 4 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 214.179 | 200 | 0 | 0 | running | 56500 | 32 |
| 10 | Michigan | Hélio Castroneves | 20 | 10 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 214.952 | 200 | 0 | 0 | running | 42000 | 20 |
| 11 | Kentucky | Hélio Castroneves | 6 | 12 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 215.029 | 200 | 0 | 0 | running | 39600 | 18 |
| 11 | Kentucky | Sam Hornish, Jr. | 3 | 14 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 215.592 | 199 | 0 | 0 | running | 37100 | 16 |
| 12 | Pikes Peak | Hélio Castroneves | 5 | 6 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 172.395 | 225 | 0 | 0 | running | 45700 | 28 |
| 12 | Pikes Peak | Sam Hornish, Jr. | 9 | 18 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 171.665 | 157 | 2 | 67 | accident | 43600 | 12 |
| 13 | Nazareth | Hélio Castroneves | 1 | 5 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 167.396 | 225 | 2 | 100 | running | 79100 | 33 |
| 13 | Nazareth | Sam Hornish, Jr. | 2 | 11 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 167.100 | 225 | 1 | 44 | running | 40700 | 19 |
| 14 | Chicagoland | Sam Hornish, Jr. | 7 | 6 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 212.991 | 200 | 0 | 0 | running | 45700 | 28 |
| 14 | Chicagoland | Hélio Castroneves | 1 | 10 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 214.759 | 200 | 0 | 0 | running | 52100 | 20 |
| 15 | Fontana | Sam Hornish, Jr. | 3 | 4 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 216.062 | 200 | 3 | 4 | running | 56500 | 32 |
| 15 | Fontana | Hélio Castroneves | 1 | 7 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 217.479 | 200 | 6 | 145 | running | 71900 | 29 |
| 16 | Texas | Hélio Castroneves | 1 | 1 | 3 | Marlboro Team Penske | Dallara | Toyota | Firestone | 215.996 | 200 | 4 | 104 | running | 122500 | 38 |
| 16 | Texas | Sam Hornish, Jr. | 2 | 17 | 6 | Marlboro Team Penske | Dallara | Toyota | Firestone | 215.097 | 163 | 2 | 53 | electrical | 34400 | 13 |
