After 10 hours of running on Wednesday at Sebring International Raceway, Porsche Penske Motorsport’s Mathieu Jaminet set the ...

Having attended both F1 and IMSA races, I found some distinct differences, and you might be surprised at what I discovered.

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.

Coming off his IMSA WeatherTech SportsCar Championship debut at the Daytona 24 Hours, Honda factory driver Kakunoshin “Kaku” ...

Need a break? Play the USA TODAY Daily Crossword Puzzle. This weekend also features two IMSA VP Racing Challenge Series races. The 45-minute sprints will begin at 2 p.m. Saturday and 1:20 p.m. Sunday.

Doonan and his team also need to be sensitive to the grassroots history of the event and the vision that IMSA founders John and Peggy Bishop had when they set the groundwork for the series more ...

Should General Motors be handed entries for WTR and AXR, that would mean four V-Series.Rs will line up on the grid ... in time for Watkins Glen with our IMSA car, so I’ve bought a second chassis.

The No. 24 RLL BMW M Hybrid V8 set the fastest time of testing before this weekend's 24 Hours of Daytona. Courtesy of IMSA The International Motor Sports Association (IMSA) is having a moment.

McLaughlin will be in the No. 6 Porsche 963 alongside the already confirmed trio of Matt Campbell, Mathieu Jaminet and Kevin ...

Racing fans will have to wait a little bit longer for the Rolex 24 later this month. But the Roar Before the Rolex 24 is set for this weekend.

Should General Motors be handed entries for WTR and AXR, that would mean four V-Series.Rs will line up on the grid ... in time for Watkins Glen with our IMSA car, so I’ve bought a second chassis.