The race, contested over 50 laps of 4.6 mi, or 7.4 km, was won by Brian Lewis driving an Alfa Romeo 8C 2300 Monza after starting from pole position.

However, the Isle of Man had its own laws, so a racing circuit was designed on the streets of Douglas.

Two races were organised, Mannin Beg (English: Small Man) for non-supercharged voiturettes with engines smaller than 1500cc on 12 July 1933 and Mannin Moar (English: Great Man) for cars with engines over 1500cc and supercharged voiturettes on 14 July 1933.

On behalf of the drivers, Earl Howe wrote a letter to The Motor complaining that the rules were considered an embarrassment and would turn races from international events into second rate affairs.

At the start of the race Lewis lost two places to Brackenbury and Eyston, who at his turn had overtaken Rose-Richards.

On lap two Lewis' mechanic signaled their intention to overtake Eyston for the lead to the flag marshals, but they did not succeed.

Eccles first pitted with gearbox troubles in lap three, then stalled his engine and later crashed into a wall.

Two men were slightly injured - a Dunlop employee and Mannin Beg winner Freddy Dixon.

On Mathieson forty-second lap, he lost his brake and went up the escape road, which ended with a barrier that protected a big crowd of spectators.

Mathieson deliberately crashed his Bugatti into a shop, but the car spun and the rear end still hit four spectators.