F1 vs Porsche Cup: Two Real Zandvoort Laps #F1 #Zandvoort #DutchGP #IndyCar #Supercars #PorscheCup

This is the one matchup on the slate we did not have to invent. Both of these cars have actually turned a lap of Zandvoort in anger, so the gap between them is measured on both sides.

The two lap times are 1:08.662 and 1:38.059, so the gap after one lap of Zandvoort is 29.40 seconds. Because the slower car is still on track when the quicker one crosses the line, the more useful way to picture it is where it has got to: it has covered about 70 per cent of the lap when the flag falls.

How we worked it out. The Formula 1 lap is Oscar Piastri’s 1:08.662 pole for the 2025 Dutch Grand Prix, and it is real. The Porsche needed no modelling at all. The Porsche Mobil 1 Supercup is a Formula 1 support race and has actually run at Zandvoort: Morris Schuring’s fastest race lap there in 2023 was a measured 1:38.059.

The honest caveat: both lap times here are measured, so the only modelled thing in the piece is the SHAPE of the lap — where each car is quick and where it is slow — solved on the real circuit geometry with each category’s own grip and power envelope. Nothing in that envelope was tuned to make a Zandvoort number come out, and on the Porsche, whose Zandvoort lap is measured and was never fitted, the model lands within 0.3 per cent.

Source: 2025 Dutch Grand Prix qualifying (Formula 1); Porsche Mobil 1 Supercup, Zandvoort 2023; circuit geometry from the OpenStreetMap-derived track atlas, rebuilt to 4,244 m against an official 4,259 m

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