IMSA Insider – Penske, AO Deliver Porsche’s Double-Double in Long Beach

LONG BEACH, Calif. – After opening the season with the 36 Hours of Florida (aka the Rolex 24 At Daytona and the Mobil 1 Twelve Hours of Sebring), the 2025 IMSA WeatherTech SportsCar Championship changed things up with the 100 minutes of Southern California (aka the Acura Grand Prix of Long Beach).

Not only was the sprint race a fraction of the length of either of the first two events, the competition was pared down from four classes – Grand Touring Prototype (GTP), Le Mans Prototype 2 (LMP2), Grand Touring Daytona Pro (GTD PRO) and Grand Touring Daytona (GTD) – to two classes: GTP and GTD.

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