IMSA is a group that runs big car races in the U.S., like the famous 24‑hour race at Daytona. It sets rules and schedules for teams that drive high‑performance sports cars.
IMSA stands for the International Motor Sports Association, an American organization that sanctions sports car racing events such as the 24 Hours of Daytona and the IMSA WeatherTech SportsCar Championship.
Hear It Discussed
"The Mustang GTD is like the perfect IMSA car except they already have GT3 Mustangs"
Top 5 Sports Cars Under $50K, The First Sports Car, The Aging Fleet | Episode 1,007 Everyday Driver Car Debate
"Cadillac is going to F1 now and they're in IMSA and obviously they're trying to create"
Gas Is About to Get Expensive! Carrera GT Values Skyrocket! $100K Subaru STI?! THIS CAR POD! with Doug DeMuro & Friends!
"...and then I really fell in love with what cars were and what you could do with them. I started racing go-karts when I was 12. I continued that into racing prototypes in IMSA."
Driving The Colorado Grand w/ Tazio Ottis — Carmudgeon Show w/ Cammisa & Derek Tam-Scott — Ep. 208 The Carmudgeon Show
Episodes Mentioning "IMSA"
Top 5 Sports Cars Under $50K, The First Sports Car, The Aging Fleet | Episode 1,007
Everyday Driver Car Debate
The Pit Straight: Tight Streets & Fast Turns
Frontstretch Podcast Network
Midweek Motorsport s21 e21
Midweek Motorsport
MP 1697: The Week In Sports Cars June 2 2026
The Marshall Pruett Podcast
Alex Palou’s Perfect Pit, Denny Hamlin's Masterclass, + Ferrari’s Shocking Reveal!
SPEED with Harvick and Buxton
The Pits Are Open | Indy 500 Recap, McLaren Hospitality & Kevin Krauss
The Pits Are Open Podcast
Getting Used to Big Power
It's Not the Car
Gen Z Is Buying These Cars All Up!
MartiniWorks Podcast
Back to the Project Car Grind
Auto Off Topic
Jay Gillotti Part 4
Porsche Patter
The International Motor Sports Association (IMSA) is a North American sports car racing sanctioning body based in Daytona Beach, Florida, under the jurisdiction of the ACCUS arm of the FIA. It was started by John Bishop, a former executive director of SCCA, and his wife Peggy in 1969 with help from Bill France Sr. of NASCAR.