iRacing Week 1 is here!
iRacing Week 1 launches Season 4 of 2025 for Road racing, while Oval enters Week 32 of the NASCAR calendar. This week is especially exciting with the arrival of new cars and new series that change the grid for good.
On the Road side, the Aston Martin GT3 joins both GT Sprint and IMSA, the Ford Mustang GT4 expands the Falken Tyre Sports Car Challenge, and the Production Car Challenge makes its debut featuring the Toyota GR86 and BMW M2 CS. Another big addition is the brand-new IndyCar Series, headlined by the Dallara IR-18.
For Ovals, the action continues with NASCAR Cup and Trucks at New Hampshire, and Xfinity heading to IRP. While not a new series, every week here is crucial as the season moves deeper into championship battles.
What’s on the Calendar this Week
Road
- GT Sprint Simucube Series – Red Bull Ring – Grand Prix
- IMSA iRacing Series – Sebring International Raceway – International
- Falken Tyre Sports Car Challenge – Charlotte Motor Speedway – Roval 2025
- Porsche Cup – Autódromo Hermanos Rodríguez – Grand Prix
- Dallara F3 Series – Circuit de Barcelona Catalunya – Grand Prix
- Super Formula Lights – Autódromo José Carlos Pace – Grand Prix
- Advanced Mazda MX-5 Cup – Long Beach Street Circuit
- Production Car Challenge – WeatherTech Raceway at Laguna Seca – Full course
- IndyCar Series – Long Beach Street Circuit
Oval
- NASCAR CLASS A (CUP) – New Hampshire Motor Speedway – Oval
- NASCAR XFINITY (B CLASS) – Lucas Oil Indianapolis Raceway Park – Oval
- NASCAR TRUCKS (C CLASS) – New Hampshire Motor Speedway – Oval
Want to benchmark your pace this week? Check out our iRacing Lap Times Sheet. We update it weekly with tested data from every series.
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