Race Result
| GP n. 303 - 21/05/1978 - Grand Prix of Belgium Circuit Zolder, Omloop Terlamen Zolder |
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| Winner: | Mario Andretti / Lotus-Ford - 1:39'52.02 | ||||||
| Pole Position: | Mario Andretti / Lotus-Ford - 1:20.90 | ||||||
| Fastest Lap: | Ronnie Peterson / Lotus-Ford - 1:23.13 | ||||||
| Pos | Nš | Driver | Constructor | Laps | Time/Retired | Grid | Points |
| 1 | 5 |  Mario Andretti |
Lotus-Ford | 70 | 1:39'52.02 | 1 | 9 |
| 2 | 6 |  Ronnie Peterson |
Lotus-Ford | 70 | + 9.90 | 7 | 6 |
| 3 | 11 |  Carlos Reutemann |
Ferrari | 70 | + 24.34 | 2 | 4 |
| 4 | 12 |  Gilles Villeneuve |
Ferrari | 70 | + 47.04 | 4 | 3 |
| 5 | 26 |  Jacques Laffite |
Ligier-Matra | 69 | accident | 14 | 2 |
| 6 | 3 | Didier Pironi |
Tyrrell-Ford | 69 | + 1 lap | 23 | 1 |
| 7 | 30 | Brett Lunger |
McLaren-Ford | 69 | + 1 lap | 24 | 0 |
| 8 | 33 |  Bruno Giacomelli |
McLaren-Ford | 69 | + 1 lap | 21 | 0 |
| 9 | 31 | Rene Arnoux |
Martini-Ford | 68 | + 2 laps | 19 | 0 |
| 10 | 27 |  Alan Jones |
Williams-Ford | 68 | + 2 laps | 11 | 0 |
| 11 | 9 |  Jochen Mass |
ATS-Ford | 68 | + 2 laps | 16 | 0 |
| 12 | 22 |  Jacky Ickx |
Ensign-Ford | 64 | + 6 laps | 22 | 0 |
| 13 | 19 | Vittorio Brambilla |
Surtees-Ford | 63 | engine | 12 | 0 |
| Nc | 15 | Jean Pierre Jabouille |
Renault | 56 | not classified | 20 | 0 |
| Ret | 16 | Hans Joachim Stuck |
Shadow-Ford | 56 | spun off | 10 | 0 |
| Ret | 20 |  Jody Scheckter |
Wolf-Ford | 53 | spun off | 5 | 0 |
| Ret | 4 | Patrick Depailler |
Tyrrell-Ford | 51 | gear box | 13 | 0 |
| Ret | 17 |  Clay Regazzoni |
Shadow-Ford | 40 | transmission | 18 | 0 |
| Ret | 35 | Riccardo Patrese |
Arrows-Ford | 31 | suspension | 8 | 0 |
| Ret | 36 | Rolf Stommelen |
Arrows-Ford | 26 | spun off | 17 | 0 |
| Ret | 2 |  John Watson |
Brabham-Alfa Romeo | 18 | accident | 9 | 0 |
| Ret | 1 |  Niki Lauda |
Brabham-Alfa Romeo | 0 | accident | 3 | 0 |
| Ret | 14 |  Emerson Fittipaldi |
Fittipaldi-Ford | 0 | accident | 15 | 0 |
| Ret | 7 | James Hunt |
McLaren-Ford | 0 | accident | 6 | 0 |
| Dnq | 10 | Alberto Colombo |
ATS-Ford | did not qualify | 0 | ||
| Dnq | 24 |  Derek Daly |
Hesketh-Ford | did not qualify | 0 | ||
| Dnq | 25 |  Hector Rebaque |
Lotus-Ford | did not qualify | 0 | ||
| Dnq | 37 | Arturo Merzario |
Merzario-Ford | did not qualify | 0 | ||
| Dnq | 18 | Rupert Keegan |
Surtees-Ford | did not qualify | 0 | ||
| Dnq | 32 |  Keke Rosberg |
Theodore-Ford | did not qualify | 0 | ||