Singapore

The 5.063 km Marina Bay Circuit is one of the most physically demanding on the calendar, its bumpy street surface coupled with humid conditions giving the drivers plenty to think about. With 23 corners, they are working the wheel a lot, too, around the high-speed lap – the physical stress causing them to lose as much as 3kg over the course of a race. The circuit also boasts some of the most unique features of any track on the F1 calendar, including Turn 18, which actually sees the drivers pass underneath a grandstand.