Challenge BIG Free Practice Results
DATE:2021-05-09 WEATHER: Cloudy COURSE: Dry International South Course 1.264km
| Pos. | No. | Cls. | Tire | Rider | Type | Team | Time | Delay | Gap | Lap | |
| 1 | 79 | Challenge BIG | 1 | BS | Masashi Asahina | Kawasaki/GPZ1100 | Asahina Racing | 55.315 | 82.26km/h | 9/10 | |
| 2 | 61 | Challenge Unlimited | 1 | BS | Hirofumi Kinugasa | YAMAHA/YZF R6 | MADDEST+Speed Heart | 55.674 | 0.359 | 0.359 | 8/9 |
| 3 | 78 | Challenge BIG | 2 | BS | Naoki Hashimoto | Honda/VFR750R RC30 | MR7 Factory RT | 56.108 | 0.793 | 0.434 | 3/4 |
| 4 | 3 | Challenge BIG | 3 | BS | Kohei Suminami | Honda/CBR600RR | MADDEST+EDGE | 56.372 | 1.057 | 0.264 | 8/9 |
| 5 | 36 | Challenge Unlimited | 2 | BS | Toyohiro Mimura | Kawasaki/ZX6R | TeamA-PLAN+Taki Rebar | 57.578 | 2.263 | 1.206 | 2/9 |
| 6 | 22 | Challenge Unlimited | 3 | BS | Mitsuhiro Okazaki | Honda/YZF-R1 | Baksin! Baksin! | 58.353 | 3.038 | 0.775 | 8/9 |
| 7 | 73 | Challenge Unlimited | 4 | DL | Yukiyuki Uchida | Honda/CBR1000RR | R.C. Vehicles | 58.675 | 3.360 | 0.322 | 9/10 |
| 8 | 68 | Challenge BIG | 4 | PI | SULLCANY ESCOBAR HUGO | Kawasaki/ZX10R | BOLIVIA RACE TEAM | 58.931 | 3.616 | 0.256 | 6/9 |
| 9 | 43 | Challenge Unlimited | 5 | DL | Hiroyuki Honda | Honda/NSR250R | Stop Freddy 85☆SWR | 59.012 | 3.697 | 0.081 | 9/10 |
| 10 | 2 | Challenge Unlimited | 6 | BS | Takada Koji | Kawasaki/KX100 | K&T Racing | 1'00.312 | 4.997 | 1.300 | 8/10 |
| 11 | 5 | Challenge Unlimited | 7 | BS | Fumihiko Sakai | Honda/CRF450R | Club Selection Suzuka | 1'00.382 | 5.067 | 0.070 | 5/8 |
