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.

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.

Penske also returned to IMSA in 2017 with Acura and later switched to lead Porsche's GTP program, which won the 24 Hours of Daytona and the GTP championship last year. Like Brown and McLaren ...

Cadillac’s naturally aspirated cars will see the biggest bump in output based on the formula, while Acura and Porsche will get reductions. Starting at the Rolex 24, IMSA is introducing a rule ...

Two Valkyrie Hypercars will compete in WEC, and one will compete in IMSA. Like the road car, the racer sports a 6.5-liter naturally-aspirated V12. This year’s 24 Hours of Le Mans is shaping up ...

IMSA stripped Tower Motorsports of its LMP2 ... The Rolex 24 was won overall for the second consecutive year by Porsche Penske Motorsport.

Porsche boasts the mosts overall wins by far ... and both can compete in either WEC or IMSA. Le Mans Daytona h (LMDh): LMDh regulations mandate that a chassis must be built by one of four licensed ...