Heikki Mikkola
| Runda | Tor | Data | Kierowca | Pojazd | Zespół |
|---|---|---|---|---|---|
| 1 |  Payerne | 1978.04.09 | Yamaha |  | |
| 2 |  Sittendorf | 1978.04.16 | Honda | | |
| 3 |  Gaillefontaine | 1978.04.30 | Yamaha | | |
| 4 |  Nissebjerget | 1978.05.07 | Yamaha | | |
| 5 | Ruskeasanta | 1978.05.21 | Yamaha | | |
| 6 |  Västeras | 1978.05.28 | Suzuki | | |
| 7 |  Carlsbad | 1978.06.04 | Yamaha | | |
| 8 |  Gallarate | 1978.06.11 | Yamaha | | |
| 9 |  Farleigh Castle | 1978.07.02 | Honda | | |
| 10 |  Namur | 1978.07.06 | Yamaha | | |
| 11 |  Ettelbruck | 1978.08.13 | Yamaha | | |
| 12 |  Saint Anthonis | 1978.08.27 | Suzuki | |