The first 60 minutes and last two hours will air on NBC. USA, IMSA.TV and YouTube will share the middle portions. After that, IMSA, NASCAR’s sports-car cousin, will hibernate for six weeks.

The IMSA grid for 2025 is filled to brim with new teams, returning faces and expanding classes as excitement begins to brew for next year. The 2025 IMSA WeatherTech SportsCar Championship full ...

Courtesy of IMSA The International Motor Sports Association (IMSA) is having a moment. Buried for decades behind bigger and more-popular racing series, the Florida-based IMSA series is fighting ...

IMSA president John Doonan says that GTP manufacturers tell him they want to hire American drivers, but where will those drivers come from? Being elbowed out by drivers who get their training in ...

The introduction of the GTP class in 2023 set the stage for IMSA’s resurgence, but 2025 feels like the year when it all comes together. Manufacturers like Acura, BMW, Cadillac, Ferrari ...

Having attended both F1 and IMSA races, I found some distinct differences, and you might be surprised at what I discovered. F1 cars are built to go insanely fast and are incredibly nimble.

This weekend’s IMSA-sanctioned test at Daytona International Speedway provides competitors in the IMSA WeatherTech SportsCar Championship their first chance to work with new equipment or ...

That's sandbagging, for fans and competitors who think or even accuse teams or drivers of taking it was easy when IMSA officials are setting allowable power levels for the cars. Those power levels ...