Course disputée sur le circuit de Austin - Circuit of the Americas United
| Position | Numéro | Pilote | Team | Temps | Tours | Points | Départ |
|---|---|---|---|---|---|---|---|
| 1 | 5 | Romano Fenati | Sky Racing Team Vr46 | 41'14.868 | 18 | 25 | 5 |
| 2 | 9 | Jorge Navarro | Estrella Galicia 0,0 | 41'21.480 | 18 | 20 | 2 |
| 3 | 41 | Brad Binder | Red Bull KTM Ajo | 41'25.403 | 18 | 16 | 12 |
| 4 | 65 | Philipp Oettl | Schedl Gp Racing | 41'25.843 | 18 | 13 | 1 |
| 5 | 55 | Andrea Locatelli | Leopard Racing | 41'28.713 | 18 | 11 | 7 |
| 6 | 33 | Enea Bastianini | Gresini Racing Team Moto3 | 41'28.991 | 18 | 10 | 3 |
| 7 | 44 | Aron Canet | Estrella Galicia 0,0 | 41'31.177 | 18 | 9 | 22 |
| 8 | 11 | Livio Loi | Rw Racing Gp Bv | 41'36.709 | 18 | 8 | 10 |
| 9 | 95 | Jules Danilo | Ongetta-rivacold | 41'36.872 | 18 | 7 | 8 |
| 10 | 8 | Nicolo Bulega | Sky Racing Team Vr46 | 41'37.219 | 18 | 6 | 11 |
| 11 | 84 | Jakub Kornfeil | Drive M7 Sic | 41'37.582 | 18 | 5 | 4 |
| 12 | 58 | Juanfran Guevara | Rba Racing Team | 41'37.632 | 18 | 4 | 14 |
| 13 | 20 | Fabio Quartararo | Leopard Racing | 41'40.892 | 18 | 3 | 9 |
| 14 | 21 | Francesco Bagnaia | Aspar Mahindra Team Moto3 | 41'43.029 | 18 | 2 | 18 |
| 15 | 16 | Andrea Migno | Sky Racing Team Vr46 | 41'43.127 | 18 | 1 | 21 |
| 16 | 10 | Alexis Masbou | Peugeot Mc Saxoprint | 41'54.091 | 18 | 0 | 15 |
| 17 | 4 | Fabio Di Giannantonio | Gresini Racing Team Moto3 | 41'54.216 | 18 | 0 | 31 |
| 18 | 19 | Gabriel Rodrigo | Rba Racing Team | 41'54.607 | 18 | 0 | 24 |
| 19 | 24 | Tatsuki Suzuki | Cip-unicom Starker | 41'55.028 | 18 | 0 | 13 |
| 20 | 89 | Khairul Idham Pawi | Honda Team Asia | 42'02.975 | 18 | 0 | 32 |
| 21 | 17 | John Mcphee | Peugeot Mc Saxoprint | 42'03.202 | 18 | 0 | 17 |
| 22 | 64 | Bo Bendsneyder | Red Bull KTM Ajo | 42'03.310 | 18 | 0 | 23 |
| 23 | 6 | Maria Herrera | Mh6 Laglisse | 42'30.739 | 18 | 0 | 25 |
| 24 | 77 | Lorenzo Petrarca | Team Italia | 42'30.911 | 18 | 0 | 28 |
| 25 | 76 | Hiroki Ono | Honda Team Asia | 42'34.309 | 18 | 0 | 16 |
| 26 | 3 | Fabio Spiranelli | Cip-unicom Starker | 43'00.797 | 18 | 0 | 33 |
| 27 | 23 | Niccolo Antonelli | Ongetta-rivacold | 36'53.177 | 16 | 0 | 30 |
| 28 | 98 | Karel Hanika | Platinum Bay Real Estate | 26'32.838 | 11 | 0 | 19 |
| 29 | 43 | Stefano Valtulini | 3570 Team Italia | 21'30.597 | 9 | 0 | 26 |
| 30 | 88 | Jorge Martin | Aspar Mahindra Team Moto3 | 17'04.651 | 7 | 0 | 20 |
| 31 | 40 | Darryn Binder | Platinum Bay Real Estate | 12'25.871 | 5 | 0 | 29 |
| 32 | 36 | Joan Mir | Leopard Racing | 9'20.054 | 4 | 0 | 27 |
| 33 | 7 | Adam Norrodin | Drive M7 Sic | 2'20.093 | 1 | 0 | 6 |