* Lap 1: On pole position for the fourth time in his Formula One career, Fernando Alonso makes a clean start to head second- and third-fastest qualifiers Jarno Trulli and Giancarlo Fisichella into the first turn. Mark Webber and Ralf Schumacher settle into fourth and fifth, from Kimi Räikkönen, Jenson Button, Nick Heidfeld – who passes both Red Bulls during the opening lap – David Coulthard, Christian Klien, Juan Pablo Montoya, Rubens Barrichello, Felipe Massa, Michael Schumacher, Jacques Villeneuve, Anthony Davidson, Tiago Monteiro, Narain Karthikeyan, Christian Albers and Patrick Friesacher. Alonso is 0.8s clear by the end of the lap.
* Lap 2: Alonso extends his advantage to 1.2s. Button passes Räikkönen for sixth under braking for Turn One. Monteiro runs off the road at Turn 15 and drops to the tail of the field.
* Lap 3: Button pulls off in a haze of engine smoke. Precisely 32 seconds later, team-mate Davidson does likewise. Alonso is 2.1s clear. Friesacher spins into retirement at Turn One.
* Lap 4: Trulli cuts his deficit to 1.5s.
* Lap 5: Alonso pulls away again and is 2.7s to the good.
* Lap 7: Alonso moves 4.0s clear.
* Lap 9: Alonso leads by 5.8 seconds. Monteiro passes Albers for 16th. All other drivers remain in the order they have held since the B•A•R-Hondas retired.
* Lap 10: Alonso posts the race’s fastest lap so far, a 1m 36.458s. He leads by 6.3s.
* Lap 12: Alonso laps in 1m 36.396s…
* Lap 13: …and 1m 36.036s. He leads by 6.9s.
* Lap 14: Alonso laps Albers. World champion Michael Schumacher – 13th – is 40 seconds off the lead.
* Lap 15: Albers makes the race’s first scheduled stop.
* Lap 16: Alonso posts a 1m 36.000s.
* Lap 18: The top two both set their fastest laps so far: Trulli is fractionally quicker, in 1m 35.816s. They are separated by 8.0s. Klien pits and drops from ninth to 14th.
* Lap 20: Ralf Schumacher, Heidfeld, Coulthard and Karthikeyan make scheduled stops.
* Lap 21: Leaders Alonso and Trulli pit, as does Massa.
* Lap 22: Promoted to the lead for one lap, Fisichella comes in. Webber follows suit.
* Lap 23: Montoya and Villeneuve pit. Räikkönen leads – and reduces the fastest lap to 1m 35.483s.
* Lap 24: Räikkönen and Michael Schumacher pit. Alonso resumes the lead.
* Lap 25: Räikkönen suffers a blown right rear tyre soon after rejoining and heads back to the pits for a replacement. Barrichello is the last driver to stop.
* Lap 26: Alonso leads Trulli by more than 12 seconds. With the first round of stops over, Fisichella retains third from Webber, Ralf Schumacher, Heidfeld, Montoya, Barrichello, Coulthard, Klien, Michael Schumacher, Massa, Villeneuve and the delayed Räikkönen. Karthikeyan, Monteiro and Albers have all been lapped.
* Lap 27: Villeneuve spins into retirement at Turn One.
* Lap 30: Webber is putting increasing pressure on Fisichella, with Ralf Schumacher keeping a watching brief.
* Lap 32: Webber has an unsuccessful pop at Fisichella – and leaves himself exposed to attack from Ralf Schumacher. The German lunges by at Turn 15 – and delays them both enough for Heidfeld to gain two places in an instant. Webber retaliates immediately and repasses Heidfeld.
* Lap 33: Ralf S gets by Heidfeld – but the Williams driver hits back and makes the move stick.
* Lap 34: Coulthard passes Barrichello for eighth – and team-mate Klien demotes the Brazilian half a lap later.
* Lap 35: The Williams twins are closing dramatically on Fisichella. Barrichello comes in early for a second stop.
* Lap 37: Webber pitches for third place at Turn 15. Fisichella tries to defend and the two cars enter the corner side by side, with the Italian on the inside. They touch and Fisichella’s Renault teeters on two wheels after their wheels interlock. Both drivers retire with suspension damage. Heidfeld moves up to third.
* Lap 40: Leading by 17 seconds, Alonso makes his second – and final – scheduled stop. He rejoins second, six seconds adrift of Trulli. Klien and Massa refuel, too.
* Lap 41: Ralf Schumacher, Coulthard and Räikkönen pit.
* Lap 42: Trulli and Heidfeld peel in. Alonso regains the lead.
* Lap 43: Montoya pits.
* Lap 44: Michael Schumacher is the last driver to make his final stop. Alonso leads from Trulli, Heidfeld, Montoya (who gained a place during the pit shuffle), Ralf S, Coulthard, Michael S, Klien, Räikkönen and Massa. Barrichello is 11th, a lap in arrears. The Jordans and Albers are still running, too.
* Lap 45: Räikkönen passes Massa for ninth place when the Brazilian skates wide under pressure at Turn 15.
* Lap 49: Barrichello pulls straight into his pit garage to retire.
* Lap 50: Alonso laps tenth-placed Massa. The Spaniard leads by 18.9s.
* Lap 56: Alonso wins by 23.4s from Trulli. It is the Spaniard’s second grand prix success – and Trulli gives Toyota its first podium finish. Heidfeld takes third – his first podium since Brazil 2001 – from Montoya, Ralf S, Coulthard and Michael S – who finishes with Klien and Räikkönen on his tail. Alonso leads the provisional world championship table: he has 16 points, six more than Fisichella.