Zandvoort's banking is 18 degrees. That is steeper than it sounds.

Where the season actually stands

Formula 1 comes back from the summer break at Zandvoort on 21 August, round 12 of 23. The official calendar has it as the next race, and it is the last one the circuit will host. Zandvoort chose not to renew beyond 2026.

Andrea Kimi Antonelli leads on 219 points, fifty clear of Lewis Hamilton. What the table hides is how he got there. He has won six of the eleven races run: China, Japan, Miami, Canada, Monaco and Belgium.

Then Lando Norris won in Hungary, and the shape of the second half changed. McLaren sit third in the constructors' standings on 220, behind Mercedes on 379 and Ferrari on 307. Red Bull are fourth. For Max Verstappen this is a home race that will not come round again.

The weekend also carries a Sprint for the first time here, which cuts practice. That matters more at Zandvoort than almost anywhere, and the reason is underfoot.

What 18 degrees actually looks like

Track banking gets quoted in degrees, which is a unit almost nobody has intuition for. Roads are quoted as percentages, and most of us have driven up something marked 12% and felt it.

So convert. A slope of 18 degrees is a gradient of 32.5%. Nineteen degrees is 34.4%. Mercedes puts the peak gradient at Turn 14 at 32%, which lines up.

Now the comparison worth having. Guinness World Records lists Baldwin Street in Dunedin as the steepest street in the world, verified on 7 November 2019 at 34.8%. That is a road people struggle to walk up.

Banking angles converted to road gradients. Bars scaled against a 36% axis. Indianapolis figure from Red Bull Racing, Baldwin Street from Guinness World Records.

The Hugenholtzbocht is within half a percentage point of the steepest street anyone has ever certified. Drivers arrive there at speed and use the slope to fire themselves out towards the dunes.

Why the banking exists at all

The banking looks like showmanship. It was a solution to a problem that had no other answer.

When Zandvoort was being reworked for its 2021 return, Formula 1 wanted DRS available through the final corner. The sums came back badly. As circuit director Jan Lammers' team put it to Autosport, the permissible centrifugal forces would have been exceeded in the finishing bend, and the cars would simply have become too fast at the exit.

Fifteen options were assessed. One was making the preceding corner almost a right angle, so cars would crawl out of it. Every version left the same problem in place.

Banking solved it by changing the direction of the force rather than the speed. Italian designer Dromo built both corners, and its founder Jarno Zaffelli called Zandvoort a hypertrack, on the grounds that nothing else on the calendar does this. The idea originally came from the late FIA race director Charlie Whiting.

What banking buys, and what it costs

On a flat corner every bit of the turning force goes through the tyres sideways. Tilt the road and some of that force becomes vertical, pressing the car down rather than pushing it out.

The effect is large. Take a car with grip equal to one g, hold the corner radius constant, and add 18 degrees of banking. The maximum speed through that corner rises by about 40%. A corner good for 200 km/h flat becomes good for 280.

That model is deliberately simple, and it is worth saying where it stops. It assumes grip does not change with speed, which is false for a Formula 1 car, because downforce grows with the square of velocity. The real gain is layered on top of an aerodynamic load the calculation ignores. The direction is right and the magnitude is indicative rather than exact.

The cost lands on the tyres. Banking adds vertical load without the drag penalty that wings would bring, so cars carry more speed and the rubber absorbs it. On a Sprint weekend, with one practice session instead of three, teams get far less time to work out how much that costs them over a stint.

By historical standards, 18 degrees is modest

Zandvoort has the steepest banking in Formula 1 today. Set against the sport's own past it is tame.

The Monza oval was rebuilt in 1955 with 38 degrees at its steepest, a 78% gradient. AVUS in Berlin, which hosted the 1959 German Grand Prix, ran 43 degrees. That works out at 93%, and Red Bull Racing notes it had no barrier at the top.

Gradients calculated as the tangent of the banking angle. Banking figures from Red Bull Racing and Formula 1.

Modern Formula 1's most extreme corner is less than half as steep as something drivers accepted seventy years ago, without a barrier. That is a fair measure of how much the sport's appetite for risk has changed.

Common questions

How steep is the banking at Zandvoort?

Turn 3, the Hugenholtzbocht, is about 19 degrees. Turn 14, the Arie Luyendykbocht, is 18. As road gradients those are 34.4% and 32.5%.

Is it the steepest banking in Formula 1?

On the current calendar, yes, and roughly double the 9.2 degrees at Indianapolis. Historically it is modest. Monza reached 38 degrees and AVUS 43.

Why did they add banking?

Formula 1 wanted DRS through the final corner and the forces would have exceeded what the cars are built for. Fifteen options were assessed. Banking was the one that worked.

When is the 2026 Dutch Grand Prix?

Round 12, at Zandvoort, 21 to 23 August, with the race on Sunday. It is the last one, and it carries a Sprint for the first time.