Challenge BIG Free Practice Results Table
DATE: 2018-04-08 WEATHER: Fine COURSE: Dry International South Course 1.264km
| Pos. | No. | Rider | Type | Team | Time | Delay | Gap | Lap | |
| 1 | 76 | Tetsu Nakao | Honda CBR600RR | Rider House Miyajima | 57.971 | 78.49km/h | 8/8 | ||
| 2 | 32 | Toru Futono | Suzuki GSX-R1000 | Modern Racing & RHM Island | 59.761 | 1.790 | 1.790 | 5/5 | |
| 3 | 68 | SULLCANY VICTOR | Kawasaki ZX10R | Bolivia RACE TEAM | 1'00.178 | 2.207 | 0.417 | 10/10 | |
| 4 | 39 | Hiroaki Sakurai | Honda CBR1000RR SP | Mr. BOB and Team FCC-Z | 1'01.224 | 3.253 | 1.046 | 8/8 | |
| 5 | 30 | Yamamoto Yu | Honda CBR1000RR | Auto Life Hano Chick Group | 1'15.800 | 17.829 | 14.576 | 3/8 |
