The first practice session for Round 5 of the 2017 F1 season, the Spanish Grand Prix, took place at the Circuit de Barcelona-Catalunya.
Lewis Hamilton was fastest with a 1:21.521. Valtteri Bottas finished second, 0.029s behind, while Kimi Räikkönen was third. The gaps from the leader to second and third were 0.029s and 0.935s respectively.
The top five were Lewis Hamilton in first, Valtteri Bottas second, Kimi Räikkönen third, Sebastian Vettel fourth and Max Verstappen fifth. Practice sessions award no points, and teams may follow different run plans, so the timesheet represents only the official results of this session.
Mercedes occupied first and second, Ferrari third and fourth, and Red Bull fifth and sixth.
Felipe Massa and Lance Stroll each completed 34 laps, the most in the session. Fernando Alonso recorded one lap, the fewest.
Fernando Alonso did not record a timed lap.
| Position | Driver | Team | Lap Time/Gap | Laps |
|---|---|---|---|---|
| 1 | Lewis Hamilton | Mercedes | 1:21.521 | 28 |
| 2 | Valtteri Bottas | Mercedes | +0.029s | 30 |
| 3 | Kimi Räikkönen | Ferrari | +0.935s | 24 |
| 4 | Sebastian Vettel | Ferrari | +1.079s | 23 |
| 5 | Max Verstappen | Red Bull | +1.185s | 22 |
| 6 | Daniel Ricciardo | Red Bull | +1.563s | 17 |
| 7 | Kevin Magnussen | Haas | +2.149s | 22 |
| 8 | Romain Grosjean | Haas | +2.237s | 23 |
| 9 | Nico Hülkenberg | Renault | +2.472s | 24 |
| 10 | Carlos Sainz | Toro Rosso | +2.483s | 21 |
| 11 | Sergio Pérez | Force India | +2.667s | 23 |
| 12 | Esteban Ocon | Force India | +2.803s | 22 |
| 13 | Stoffel Vandoorne | McLaren | +2.879s | 24 |
| 14 | Felipe Massa | Williams | +3.097s | 34 |
| 15 | Daniil Kvyat | Toro Rosso | +3.121s | 18 |
| 16 | Marcus Ericsson | Sauber | +3.445s | 23 |
| 17 | Pascal Wehrlein | Sauber | +3.661s | 24 |
| 18 | Lance Stroll | Williams | +4.398s | 34 |
| 19 | Sergey Sirotkin | Renault | +4.772s | 10 |
| 20 | Fernando Alonso | McLaren | No time | 1 |
