All Results of Yasuhiro Okamoto
Year: 1973
| Date | Race | No. | Car | Drivers | Entrant | Result |
| 10.10.1973 | 250 km Fuji | 77 | Sigma GC73 | Yasuhiro Okamoto | | 9th |
| 23.11.1973 | 200 km Fuji | 78 | Sigma GC73 | Yasuhiro Okamoto | | DNF |
Year: 1974
| Date | Race | No. | Car | Drivers | Entrant | Result |
| 5.5.1974 | 300 km Fuji | 77 | Sigma GC73 | Yasuhiro Okamoto | | 11th |
| 16.6.1974 | 24 h Le Mans | 25 | Sigma MC74 | Takahashi / Okamoto / Terada | Mazda Automotive | NC |
| 18.8.1974 | 500 km Fuji | | Sigma GC73 | Terada / Okamoto | | 1st |
| 1.9.1974 | 200 mile Fuji | 77 | Sigma GC73 | Yasuhiro Okamoto | | 2nd |
| 24.11.1974 | 200 km Fuji | 77 | Sigma GC73 | Yasuhiro Okamoto | | 9th |
Year: 1975
| Date | Race | No. | Car | Drivers | Entrant | Result |
| 8.6.1975 | 250 km Fuji | 77 | Sigma GC73 | Yasuhiro Okamoto | Mazda Auto Tokyo | DNF |
| 15.6.1975 | 24 h Le Mans | 97 | Mazda RX-3 | Terada / Okamoto / Yorino | Mazda Auto Co Ltd. | DNA |
| 7.9.1975 | 200 mile Fuji | 78 | Sigma MC74 | Yasuhiro Okamoto | Mazda Auto Tokyo | raced |
| 19.10.1975 | 250 km Fuji | 77 | Sigma GC73 | Yasuhiro Okamoto | Mazda Auto Tokyo | 12th |
Year: 1976
| Date | Race | No. | Car | Drivers | Entrant | Result |
| 21.3.1976 | 300 km Fuji | 77 | Sigma GC73 | Yasuhiro Okamoto | Mazda Auto Tokyo | DNF |
| 5.9.1976 | 200 mile Fuji | 77 | Sigma GC73 | Yasuhiro Okamoto | Mazda Auto Tokyo | 4th |
| 21.11.1976 | 200 km Fuji | 77 | Sigma GC73 | Yasuhiro Okamoto | Mazda Auto Tokyo | 9th |
Year: 1977
| Date | Race | No. | Car | Drivers | Entrant | Result |
| 12.6.1977 | 24 h Le Mans | | Sigma MC77 | Takahashi / Kurosawa / Okamoto / Kaneda | Shin Kato | DNA |
Year: 1978
| Date | Race | No. | Car | Drivers | Entrant | Result |
| 9.4.1978 | 500 km Fuji | 5 | March 75S | Katayama / Okamoto | Katayama Racing | 9th |
| 4.6.1978 | 250 km Fuji | 35 | March 76S | Yasuhiro Okamoto | Katayama Racing | DNF |
Year: 1979
| Date | Race | No. | Car | Drivers | Entrant | Result |
| 3.5.1979 | 250 km Fuji | 35 | March 75S | Yasuhiro Okamoto | Katayama Racing | 8th |
Year: 1981
| Date | Race | No. | Car | Drivers | Entrant | Result |
| 7.6.1981 | 500 km Fuji | 81 | Mazda RX-3 | Suzuki / Okamoto | Shizumatsu Racing Team | 8th |
| 22.11.1981 | 500 mile Fuji | 81 | Mazda RX-3 | Suzuki / Ihara / Okamoto | Shizumatsu Racing Team | 10th |
Year: 1982
| Date | Race | No. | Car | Drivers | Entrant | Result |
| 25.7.1982 | 1000 km Fuji | 80 | Mazda RX-7 | Shiratori / Suzuki / Okamoto | Shizumatsu Racing Team | 5th |
Year: 1986
| Date | Race | No. | Car | Drivers | Entrant | Result |
| 20.7.1986 | 500 mile Fuji | 19 | SARD MC86X | Sasaki / Okamoto | SARD | 7th |
| 24.8.1986 | 1000 km Suzuka | 19 | SARD MC86X | Sasaki / Okamoto / Misaki | SARD | DNF |
| 5.10.1986 | 1000 km Fuji | 50 | SARD MC86X | In entry list only | SARD | 23rd |
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