500
Johann Zarco menggeser Jack Miller dengan selisih 0,073 detik pada latihan bebas ketiga MotoGP San Marino 2018 dengan kondisi lintasan mulai mengering.
Hujan semalaman membuat sirkuit menjadi lembab untuk memulai FP3, dan meskipun garis balap cukup kering untuk ban slick, catatan waktu gabungan tidak dapat dicapai oleh sebagian besar pembalap. Berikut hasil lengkap FP3 MotoGP San Marino Misano 2018:
| Pos | Driver | Team | Time | Gap |
|---|---|---|---|---|
| 1 | Johann Zarco | Yamaha Tech 3 | 1:32.788 | |
| 2 | Jack Miller | Pramac Racing | 1:32.861 | 0.073 |
| 3 | Andrea Dovizioso | Ducati Team | 1:33.278 | 0.490 |
| 4 | Marc Marquez | Honda Team | 1:33.322 | 0.534 |
| 5 | Cal Crutchlow | LCR Honda | 1:33.366 | 0.578 |
| 6 | Alex Rins | Suzuki Ecstar | 1:33.554 | 0.766 |
| 7 | Franco Morbidelli | Marc VDS | 1:33.600 | 0.812 |
| 8 | Dani Pedrosa | Honda Team | 1:33.689 | 0.901 |
| 9 | Hafizh Syahrin | Yamaha Tech 3 | 1:33.743 | 0.955 |
| 10 | Maverick Vinales | Yamaha MotoGP | 1:33.724 | 0.936 |
| 11 | Alvaro Bautista | Angel Nieto Team | 1:33.926 | 1.138 |
| 12 | Takaaki Nakagami | LCR Honda | 1:34.170 | 1.382 |
| 13 | Xavier Simeon | Avintia Racing | 1:34.485 | 1.697 |
| 14 | Scott Redding | Aprilia Racing | 1:34.500 | 1.712 |
| 15 | Danilo Petrucci | Pramac Racing | 1:34.681 | 1.893 |
| 16 | Stefan Bradl | Honda Team | 1:34.889 | 2.101 |
| 17 | Aleix Espargaro | Aprilia Racing | 1:34.941 | 2.153 |
| 18 | Michele Pirro | Ducati Team | 1:34.953 | 2.165 |
| 19 | Pol Espargaro | KTM Racing | 1:34.963 | 2.175 |
| 20 | Valentino Rossi | Yamaha MotoGP | 1:35.202 | 2.414 |
| 21 | Bradley Smith | KTM Racing | 1:35.236 | 2.448 |
| 22 | Thomas Luthi | Marc VDS | 1:35.598 | 2.810 |
| 23 | Karel Abraham | Angel Nieto Team | 1:35.808 | 3.020 |
| 24 | Christophe Ponsson | Avintia Racing | ||
| 25 | Andrea Iannone | Suzuki Ecstar | ||
| 26 | Jorge Lorenzo | Ducati Team |
