When it happens
The Singapore Grand Prix runs annually in September, turning the streets around Marina Bay into a temporary street circuit.
What closes
Roads around the Padang, City Hall, and the Marina Bay waterfront close progressively in the days before the race, with the heaviest disruption on race weekend itself.
How to plan around it
Hotel prices in the area spike significantly during race week — book well ahead or consider staying outside the immediate circuit zone if you're not attending.