Fernando Alonso won the San Marino Grand Prix 2005 at Autodromo Enzo e Dino Ferrari on 24 April 2005, starting from P2 on the grid. Michael Schumacher finished second for Ferrari, with Alexander Wurz completing the podium for McLaren. Michael Schumacher set the fastest lap with a time of 1:21.858.
| Pos | Grid | Driver | Team | Laps | Time / Status | Pts | FL |
|---|---|---|---|---|---|---|---|
| 1 | 2 | Fernando AlonsoALO | Renault | 62 | 1:27:41.921 | 10 | |
| 2 | 13 | Michael SchumacherMSC | Ferrari | 62 | +0.215 | 8 | ⚡ 1:21.858 |
| 3 | 7 | Alexander WurzWUR | McLaren | 62 | +27.554 | 6 | |
| 4 | 11 | Jacques VilleneuveVIL | Sauber | 62 | +1:04.442 | 5 | |
| 5 | 5 | Jarno TrulliTRU | Toyota | 62 | +1:10.258 | 4 | |
| 6 | 8 | Nick HeidfeldHEI | Williams | 62 | +1:11.282 | 3 | |
| 7 | 4 | Mark WebberWEB | Williams | 62 | +1:23.297 | 2 | |
| 8 | 15 | Vitantonio LiuzziLIU | Red Bull | 62 | +1:23.764 | 1 | |
| 9 | 10 | Ralf SchumacherSCH | Toyota | 62 | +1:35.841 | 0 | |
| 10 | 18 | Felipe MassaMAS | Sauber | 61 | +1 Lap | 0 | |
| 11 | 14 | David CoulthardCOU | Red Bull | 61 | +1 Lap | 0 | |
| 12 | 16 | Narain KarthikeyanKAR | Jordan | 61 | +1 Lap | 0 | |
| 13 | 17 | Tiago MonteiroTMO | Jordan | 60 | +2 Laps | 0 | |
| R | 20 | Christijan AlbersALB | Minardi | 20 | Hydraulics | 0 | |
| R | 9 | Rubens BarrichelloBAR | Ferrari | 18 | Electrical | 0 | |
| R | 1 | Kimi RäikkönenRAI | McLaren | 9 | Driveshaft | 0 | |
| R | 19 | Patrick FriesacherFRI | Minardi | 8 | Clutch | 0 | |
| R | 12 | Giancarlo FisichellaFIS | Renault | 5 | Accident | 0 | |
| D | 3 | Jenson ButtonBUT | BAR | 62 | +10.4 | 0 | |
| D | 6 | Takuma SatoSAT | BAR | 62 | +34.7 | 0 |
| Pos | Driver | Team | Q1 | Q2 | Q3 |
|---|---|---|---|---|---|
| 1 | Kimi Räikkönen | McLaren | 1:19.886 | 1:22.994 | - |
| 2 | Fernando Alonso | Renault | 1:19.889 | 1:23.552 | - |
| 3 | Jenson Button | BAR | 1:20.464 | 1:23.641 | - |
| 4 | Mark Webber | Williams | 1:20.442 | 1:24.069 | - |
| 5 | Jarno Trulli | Toyota | 1:20.492 | 1:24.026 | - |
| 6 | Takuma Sato | BAR | 1:20.851 | 1:23.807 | - |
| 7 | Alexander Wurz | McLaren | 1:20.632 | 1:24.057 | - |
| 8 | Felipe Massa | Sauber | 1:20.593 | 1:24.337 | - |
| 9 | Nick Heidfeld | Williams | 1:20.807 | 1:24.389 | - |
| 10 | Rubens Barrichello | Ferrari | 1:20.892 | 1:24.351 | - |
| 11 | Ralf Schumacher | Toyota | 1:20.994 | 1:24.422 | - |
| 12 | Jacques Villeneuve | Sauber | 1:20.999 | 1:25.260 | - |
| 13 | Giancarlo Fisichella | Renault | 1:21.708 | 1:25.002 | - |
| 14 | Michael Schumacher | Ferrari | 1:20.260 | 1:26.984 | - |
| 15 | David Coulthard | Red Bull | 1:21.632 | 1:26.438 | - |
| 16 | Vitantonio Liuzzi | Red Bull | 1:21.804 | 1:26.351 | - |
| 17 | Narain Karthikeyan | Jordan | 1:23.123 | 1:28.976 | - |
| 18 | Tiago Monteiro | Jordan | 1:25.100 | 1:29.152 | - |
| 19 | Patrick Friesacher | Minardi | 1:26.484 | 1:30.564 | - |
| 20 | Christijan Albers | Minardi | 1:25.921 | - | - |