The IMSA VP Racing Sportscar Challenge is a North American auto racing series for LMP3, GT3 (run as the GTDX class), and GT4 (run as the GSX class) vehicles. The series is sanctioned by IMSA and is usually run as support races for the IMSA SportsCar Championship. The series began in 2023 as a replacement for the IMSA Prototype Challenge series.
The IMSA VP Racing Sportscar Challenge retained LMP3 class cars from the Prototype Challenge series, but introduced GT4 cars to allow for multi-class racing. Beginning in 2025, the series introduced a third class, GTDX, open to GT3-specification cars. The series features two 45-minute races per event weekend with no mid-race pit stops or driver changes. The series is designed as a development series for other IMSA series, and as such drivers must have either a silver or bronze categorization from the FIA to participate.
The series is currently sponsored by VP Racing Fuels.
Champions
Drivers Season LMP3 GTDX GSX 2023 Bijoy Garg Not Held Francis Selldorff 2024 Steven Aghakhani Luca Mars 2025 Valentino Catalano Adam Adelson Kiko Porto
Teams Season LMP3 GTDX GSX 2023 #3 Jr III Racing Not Held #95 Turner Motorsport 2024 #87 Fast MD Racing with Remstar #59 KohR Motorsports 2025 #30 Gebhardt Motorsport #24 Wright Motorsports #8 RAFA Racing
Manufacturers Season GTDX GSX 2023 Not Held BMW 2024 Ford 2025 BMW Toyota
Circuits
Circuit Years Canadian Tire Motorsport Park 2023–2026 Circuit of the Americas 2025–2026 Daytona International Speedway 2023–2026 Lime Rock Park 2023, 2027 Michelin Raceway Road Atlanta 2023–present Mid-Ohio Sports Car Course 2024–present Road America 2026 Sebring International Raceway 2023, 2026 St. Petersburg Street Circuit 2024 Virginia International Raceway 2023–2026 Barber Motorsports Park 2027 Watkins Glen International 2027
References
External links Official website