| Circuit | Montjuich |
| Date | 27.04.1975 |
| Laps | 29 |
| Distance | 109,910 km /68,295 miles |
| No | Driver | Ferrari | S/N | Team | Result |
| 11 | Clay Regazzoni | 312 T | 021 | Scuderia Ferrari | retired/not classified |
| 12 | Niki Lauda | 312 T | 022 | Scuderia Ferrari | retired/accident |
| Circuit | Monte Carlo |
| Date | 11.05.1975 |
| Laps | 75 |
| Distance | 245,850 km /152,775 miles |
| No | Driver | Ferrari | S/N | Team | Result |
| 11 | Clay Regazzoni | 312 T | 018 | Scuderia Ferrari | retired/accident |
| 12 | Niki Lauda | 312 T | 023 | Scuderia Ferrari | 1. |
| Circuit | Zolder |
| Date | 25.05.1975 |
| Laps | 70 |
| Distance | 298,340 km /185,360 miles |
| No | Driver | Ferrari | S/N | Team | Result |
| 11 | Clay Regazzoni | 312 T | 022 | Scuderia Ferrari | 5. |
| 12 | Niki Lauda | 312 T | 023 | Scuderia Ferrari | 1. |
| Circuit | Anderstorp |
| Date | 08.06.1975 |
| Laps | 80 |
| Distance | 321,440 km /199,760 miles |
| No | Driver | Ferrari | S/N | Team | Result |
| 11 | Clay Regazzoni | 312 T | 021 | Scuderia Ferrari | 3. |
| 12 | Niki Lauda | 312 T | 023 | Scuderia Ferrari | 1. |
| Circuit | Zandvoort |
| Date | 22.06.1975 |
| Laps | 75 |
| Distance | 316,950 km /196,950 miles |
| No | Driver | Ferrari | S/N | Team | Result |
| 11 | Clay Regazzoni | 312 T | 021 | Scuderia Ferrari | 3. |
| 12 | Niki Lauda | 312 T | 022 oder 023 | Scuderia Ferrari | 2. |
| Circuit | Le Castellet Paul Richard |
| Date | 06.07.1975 |
| Laps | 54 |
| Distance | 313,740 km /194,940 miles |
| No | Driver | Ferrari | S/N | Team | Result |
| 11 | Clay Regazzoni | 312 T | 024 | Scuderia Ferrari | retired/engine |
| 12 | Niki Lauda | 312 T | 022 | Scuderia Ferrari | 1. |
| Circuit | Silverstone |
| Date | 19.07.1975 |
| Laps | 56 |
| Distance | 264,264km /164,192 miles |
| No | Driver | Ferrari | S/N | Team | Result |
| 11 | Clay Regazzoni | 312 T | 024 | Scuderia Ferrari | 13. |
| 12 | Niki Lauda | 312 T | 023 | Scuderia Ferrari | 8. |
| Circuit | Nürburgring |
| Date | 03.08.1975 |
| Laps | 14 |
| Distance | 319,690 km /198,646 miles |
| No | Driver | Ferrari | S/N | Team | Result |
| 11 | Clay Regazzoni | 312 T | 021 | Scuderia Ferrari | retired/engine |
| 12 | Niki Lauda | 312 T | 022 | Scuderia Ferrari | 3. |
| Circuit | Österreichring |
| Date | 17.08.1975 |
| Laps | 29 |
| Distance | 171,419 km /106,517 miles |
| No | Driver | Ferrari | S/N | Team | Result |
| 11 | Clay Regazzoni | 312 T | 024 | Scuderia Ferrari | 7. |
| 12 | Niki Lauda | 312 T | 022 | Scuderia Ferrari | 6. |
| Circuit | Monza |
| Date | 07.09.1975 |
| Laps | 52 |
| Distance | 300,560 km /186,784 miles |
| No | Driver | Ferrari | S/N | Team | Result |
| 11 | Clay Regazzoni | 312 T | 024 | Scuderia Ferrari | 1. |
| 12 | Niki Lauda | 312 T | 023 | Scuderia Ferrari | 3. |