| Race details | |||||||||||||||||||||||||||
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| Race 15 of 18 races in the 2011 Grand Prix motorcycle racing season | |||||||||||||||||||||||||||
| Date | 2 October 2011 | ||||||||||||||||||||||||||
| Official name | Grand Prix of Japan[1][2][3] | ||||||||||||||||||||||||||
| Location | Twin Ring Motegi | ||||||||||||||||||||||||||
| Course |
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| MotoGP | |||||||||||||||||||||||||||
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| Moto2 | |||||||||||||||||||||||||||
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| 125cc | |||||||||||||||||||||||||||
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The2011 Japanese motorcycle Grand Prix was the fifteenth round of the2011 Grand Prix motorcycle racing season. It took place on the weekend of 29 September–2 October 2011 at theTwin Ring Motegi, located inMotegi,Japan. The Grand Prix, originally scheduled for 24 April, was moved to 2 October due to the effects of theTōhoku earthquake and theFukushima I nuclear accidents.[4][5]
Due to concerns with possible radiation an independent survey of Motegi and the surrounding area was commissioned byFIM andDorna Sports. That survey generated a preliminary report[6] which stated "Based on the estimate dose it can be said by no doubt that the radiation risk during the race event is negligible." On 2 August the full report was received and the organisers stated that the race would take place as scheduled.[7]

| Pos. | No. | Rider | Team | Manufacturer | Laps | Time/Retired | Grid | Points |
|---|---|---|---|---|---|---|---|---|
| 1 | 26 | Repsol Honda Team | Honda | 24 | 42:47.481 | 4 | 25 | |
| 2 | 1 | Yamaha Factory Racing | Yamaha | 24 | +7.299 | 2 | 20 | |
| 3 | 27 | Repsol Honda Team | Honda | 24 | +18.380 | 1 | 16 | |
| 4 | 58 | San Carlo Honda Gresini | Honda | 24 | +23.550 | 6 | 13 | |
| 5 | 4 | Repsol Honda Team | Honda | 24 | +23.691 | 3 | 11 | |
| 6 | 11 | Yamaha Factory Racing | Yamaha | 24 | +37.604 | 5 | 10 | |
| 7 | 69 | Ducati Team | Ducati | 24 | +39.167 | 10 | 9 | |
| 8 | 5 | Monster Yamaha Tech 3 | Yamaha | 24 | +45.023 | 14 | 8 | |
| 9 | 7 | San Carlo Honda Gresini | Honda | 24 | +49.074 | 11 | 7 | |
| 10 | 14 | Pramac Racing Team | Ducati | 24 | +59.022 | 13 | 6 | |
| 11 | 35 | Monster Yamaha Tech 3 | Yamaha | 24 | +1:13.964 | 12 | 5 | |
| 12 | 64 | LCR Honda MotoGP | Honda | 24 | +1:21.709 | 16 | 4 | |
| 13 | 72 | Honda Racing Team | Honda | 24 | +1:26.381 | 18 | 3 | |
| Ret | 24 | LCR Honda MotoGP | Honda | 17 | Accident | 15 | ||
| Ret | 19 | Rizla Suzuki MotoGP | Suzuki | 13 | Accident | 8 | ||
| Ret | 6 | Pramac Racing Team | Ducati | 13 | Accident | 17 | ||
| Ret | 8 | Mapfre Aspar Team MotoGP | Ducati | 1 | Accident | 9 | ||
| Ret | 46 | Ducati Team | Ducati | 0 | Collision | 7 | ||
| DNS | 17 | Cardion AB Motoracing | Ducati | Injured | ||||
| Sources:[8][9][10] | ||||||||
| Pos. | No. | Rider | Manufacturer | Laps | Time/Retired | Grid | Points |
|---|---|---|---|---|---|---|---|
| 1 | 29 | Suter | 23 | 43:25.007 | 3 | 25 | |
| 2 | 93 | Suter | 23 | +1.999 | 1 | 20 | |
| 3 | 12 | Suter | 23 | +3.686 | 2 | 16 | |
| 4 | 65 | Kalex | 23 | +4.313 | 8 | 13 | |
| 5 | 3 | FTR | 23 | +4.647 | 6 | 11 | |
| 6 | 15 | Motobi | 23 | +4.813 | 7 | 10 | |
| 7 | 38 | Tech 3 | 23 | +10.520 | 4 | 9 | |
| 8 | 77 | Suter | 23 | +10.725 | 9 | 8 | |
| 9 | 34 | FTR | 23 | +11.387 | 17 | 7 | |
| 10 | 36 | Suter | 23 | +12.803 | 12 | 6 | |
| 11 | 19 | Tech 3 | 23 | +18.259 | 16 | 5 | |
| 12 | 13 | MZ-REHonda | 23 | +20.815 | 22 | 4 | |
| 13 | 51 | Moriwaki | 23 | +23.795 | 14 | 3 | |
| 14 | 75 | FTR | 23 | +24.388 | 10 | 2 | |
| 15 | 44 | FTR | 23 | +34.071 | 20 | 1 | |
| 16 | 16 | Suter | 23 | +38.236 | 26 | ||
| 17 | 9 | FTR | 23 | +39.505 | 29 | ||
| 18 | 76 | MZ-RE Honda | 23 | +39.609 | 28 | ||
| 19 | 54 | Suter | 23 | +42.296 | 18 | ||
| 20 | 45 | Suter | 23 | +44.162 | 15 | ||
| 21 | 53 | FTR | 23 | +46.662 | 30 | ||
| 22 | 14 | FTR | 23 | +46.950 | 25 | ||
| 23 | 68 | FTR | 23 | +49.625 | 27 | ||
| 24 | 4 | Kalex | 23 | +50.590 | 36 | ||
| 25 | 39 | Suter | 23 | +52.044 | 35 | ||
| 26 | 6 | FTR | 23 | +52.365 | 33 | ||
| 27 | 63 | Tech 3 | 23 | +1:02.873 | 24 | ||
| 28 | 7 | TSR 6 | 23 | +1:35.559 | 32 | ||
| 29 | 95 | Moriwaki | 23 | +1:35.771 | 34 | ||
| 30 | 72 | Moriwaki | 22 | +1 lap | 5 | ||
| 31 | 40 | Pons Kalex | 20 | +3 laps | 13 | ||
| Ret | 80 | Pons Kalex | 17 | Retirement | 23 | ||
| Ret | 64 | FTR | 17 | Accident | 31 | ||
| Ret | 18 | Suter | 0 | Collision | 11 | ||
| Ret | 35 | Suter | 0 | Collision | 19 | ||
| Ret | 88 | Moriwaki | 0 | Collision | 21 | ||
| DNS | 30 | Suter | Injured | ||||
| DNS | 33 | Moriwaki | Injured | ||||
| OFFICIAL MOTO2 REPORT | |||||||
Below are the standings for the top five riders and constructors after round fifteen has concluded.[11]
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| Previous race: 2011 Aragon Grand Prix | FIMGrand Prix World Championship 2011 season | Next race: 2011 Australian Grand Prix |
| Previous race: 2010 Japanese Grand Prix | Japanese motorcycle Grand Prix | Next race: 2012 Japanese Grand Prix |