- Canadian Grand Prix
- Local hero Villeneuve secures debut victory
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October 8, 1978: Gilles Villeneuve, the 28-year-old Canadian who had been creating a storm since his F1 debut 15 months earlier, won his home grand prix and did so in style
- United States Grand Prix
- Reutemann wins at a subdued Glen
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October 1, 1978: With both drivers' and constructors' titles decided, and with Lotus still in mourning after the death of Ronnie Peterson, there was little excitement among the teams for the penultimate race of the season