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.

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 ...

From the unmistakable shrill howl of the four-rotor 1991 Mazda RX-7-001 GTO to the thundering Chevrolet V-8 growl of a 1985 Lola Corvette GTP, the winners of the inaugural Historic Sportscar Racing ...

You may have seen the RS6 GT – Audi’s last-of-the-line, 90 Quattro IMSA GTO-inspired mega wagon. Despite a £180,000 price tag and a slightly questionable tri-tone sticker package, all 60 UK ...

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 ...

IndyCar legend Scott Dixon will run another Rolex 24 at Daytona this week. So will 2022 Daytona 500 winner Austin Cindric and NASCAR Cup Series rookie Shane van Gisbergen. Felipe Nasr, Dane ...

Both feature a similar base of regulations, with a few tweaks, 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 ...

IMSA stripped Tower Motorsports of its LMP2 class victory at the Rolex 24 at Daytona because of a technical infraction. The win was awarded to runner-up United Autosports. United is co-owned by ...

Increased opportunities are part of the rising tide created by the convergence of hybrid prototype rules between IMSA and the World Endurance Championship. The demand for drivers is fueled in part ...