Hasil Latihan Bebas 1 Moto3 Brno Ceko 2018, Jumat 3 Agustus 2018 :
| Pos. | Num. | Pembalap | Negara | Tim | Motor | Km/h | Waktu | Gap 1st/Prev. |
| 1 | 65 | Philipp OETTL | GER | Sudmetal Schedl GP Racing | KTM | 215 | 2’09.194 | |
| 2 | 88 | Jorge MARTIN | SPA | Del Conca Gresini Moto3 | Honda | 218.4 | 2’09.533 | 0.339 / 0.339 |
| 3 | 17 | John MCPHEE | GBR | CIP – Green Power | KTM | 216.1 | 2’09.614 | 0.420 / 0.081 |
| 4 | 44 | Aron CANET | SPA | Estrella Galicia 0,0 | Honda | 217.8 | 2’09.640 | 0.446 / 0.026 |
| 5 | 84 | Jakub KORNFEIL | CZE | Redox PruestelGP | KTM | 215.3 | 2’09.895 | 0.701 / 0.255 |
| 6 | 8 | Nicolo BULEGA | ITA | SKY Racing Team VR46 | KTM | 217.3 | 2’09.947 | 0.753 / 0.052 |
| 7 | 27 | Kaito TOBA | JPN | Honda Team Asia | Honda | 220.3 | 2’10.009 | 0.815 / 0.062 |
| 8 | 48 | Lorenzo DALLA PORTA | ITA | Leopard Racing | Honda | 223.1 | 2’10.034 | 0.840 / 0.025 |
| 9 | 16 | Andrea MIGNO | ITA | Angel Nieto Team Moto3 | KTM | 217.4 | 2’10.182 | 0.988 / 0.148 |
| 10 | 12 | Marco BEZZECCHI | ITA | Redox PruestelGP | KTM | 217.3 | 2’10.259 | 1.065 / 0.077 |
| 11 | 21 | Fabio DI GIANNANTONIO | ITA | Del Conca Gresini Moto3 | Honda | 214.7 | 2’10.304 | 1.110 / 0.045 |
| 12 | 33 | Enea BASTIANINI | ITA | Leopard Racing | Honda | 213.5 | 2’10.406 | 1.212 / 0.102 |
| 13 | 77 | Vicente PEREZ | SPA | Reale Avintia Academy 77 | KTM | 218.5 | 2’10.585 | 1.391 / 0.179 |
| 14 | 14 | Tony ARBOLINO | ITA | Marinelli Snipers Team | Honda | 217.9 | 2’10.608 | 1.414 / 0.023 |
| 15 | 7 | Adam NORRODIN | MAL | Petronas Sprinta Racing | Honda | 216.9 | 2’10.628 | 1.434 / 0.020 |
| 16 | 71 | Ayumu SASAKI | JPN | Petronas Sprinta Racing | Honda | 218 | 2’10.629 | 1.435 / 0.001 |
| 17 | 24 | Tatsuki SUZUKI | JPN | SIC58 Squadra Corse | Honda | 215.6 | 2’10.666 | 1.472 / 0.037 |
| 18 | 22 | Kazuki MASAKI | JPN | RBA BOE Skull Rider | KTM | 216 | 2’10.673 | 1.479 / 0.007 |
| 19 | 41 | Nakarin ATIRATPHUVAPAT | THA | Honda Team Asia | Honda | 212 | 2’10.693 | 1.499 / 0.020 |
| 20 | 23 | Niccolò ANTONELLI | ITA | SIC58 Squadra Corse | Honda | 219.8 | 2’10.758 | 1.564 / 0.065 |
| 21 | 5 | Jaume MASIA | SPA | Bester Capital Dubai | KTM | 219.9 | 2’10.790 | 1.596 / 0.032 |
| 22 | 42 | Marcos RAMIREZ | SPA | Bester Capital Dubai | KTM | 220 | 2’10.791 | 1.597 / 0.001 |
| 23 | 19 | Gabriel RODRIGO | ARG | RBA BOE Skull Rider | KTM | 216.4 | 2’10.795 | 1.601 / 0.004 |
| 24 | 10 | Dennis FOGGIA | ITA | SKY Racing Team VR46 | KTM | 221.5 | 2’10.839 | 1.645 / 0.044 |
| 25 | 75 | Albert ARENAS | SPA | Angel Nieto Team Moto3 | KTM | 214.9 | 2’10.855 | 1.661 / 0.016 |
| 26 | 40 | Darryn BINDER | RSA | Red Bull KTM Ajo | KTM | 215 | 2’11.528 | 2.334 / 0.673 |
| 27 | 15 | Filip SALAC | CZE | Cuna de Campeones Czech Talent | KTM | 215.2 | 2’11.844 | 2.650 / 0.316 |
| 28 | 72 | Alonso LOPEZ | SPA | Estrella Galicia 0,0 | Honda | 216 | 2’12.093 | 2.899 / 0.249 |
| 29 | 81 | Stefano NEPA | ITA | CIP – Green Power | KTM | 216.6 | 2’13.050 | 3.856 / 0.957 |
