Finally an American Miller was entered by Louis Zborowski, the first private entry ever to be accepted for the French Grand Prix.

At the end of the first lap Segrave had a small lead over Ascari, Guinness, Campari and Pietro Bordino (in a Fiat).

On lap nine Bordino overshot a corner due to fading brakes, giving the lead to Ascari.

[3] Ascari made a scheduled pitstop for fuel and tyres on lap 16, allowing Guinness into a small lead over Campari.

Segrave, who was a lap down, had to stop for a new riding mechanic as his had been hit by the tread of Guinness' blown tyre.

On the following lap Guinness retired with engine failure giving Alfa Romeo first, second and fifth places, with the Delages in third, fourth and sixth.

Mechanic Ramponi attempted to push the car over the line but collapsed, so the Alfa Romeo was a non-finisher.