Al Holbert
Remembered as a foundational Porsche endurance great. 5x IMSA champion.
IMSA Trivia
Play free IMSA trivia and quiz games — 57 questions and 27 drivers profiles. Jump into the game, or read on.
IMSA Drivers
Andy Wallace
Remained active as a professional test and race driver. 1988 overall Le Mans winner.
Antonio Garcia
Ranks among Corvette's most decorated drivers. Multiple Corvette GT class championships (GTLM/GTD Pro).
Bob Wollek
Died in a cycling accident before a 2001 race. 4x Rolex 24 At Daytona winner.
Brian Redman
Later helped organize historic racing events. 3x consecutive U.S. F5000 champion.
Butch Leitzinger
Enjoyed a long and respected road-racing career. Multiple IMSA/ALMS sports-car championships.
Chip Robinson
Later stepped back from top-level competition. 1987 IMSA GTP champion.
Christian Fittipaldi
Retired carrying on his family's racing legacy. 2014 Tudor United SportsCar (DP) champion.
Dane Cameron
Became a veteran leader of a championship squad. 2024 IMSA GTP champion.
Felipe Nasr
Became the flagship driver of the Porsche prototype effort. 2024 IMSA GTP champion.
Filipe Albuquerque
Recognized as one of Portugal's top sports-car exports. Multiple IMSA prototype drivers' championships.
Geoff Brabham
Continued a famous family's racing legacy. 4x consecutive IMSA GTP champion (1988-1991).
Hurley Haywood
Became an ambassador for the marque he defined. 5x Rolex 24 At Daytona overall winner (tied all-time record).
Jan Magnussen
Later raced alongside his own son. Multiple GT class championships with Corvette.
Joao Barbosa
Retired as a Portuguese endurance standout. 2x Daytona Prototype champion (2014, 2016).
Jordan Taylor
Became a versatile factory sports-car mainstay. 2017 IMSA Prototype champion.
Mathieu Jaminet
Established himself as a top French endurance talent. IMSA GTP race winner and title contender.
Max Angelelli
Retired as a beloved figure in the paddock. Daytona Prototype champion.
Nick Tandy
Earned the nickname 'Mr. 24 Hours'. 2015 overall winner of the 24 Hours of Le Mans.
Oliver Gavin
Retired as a Corvette Racing legend. Multiple ALMS GT class championships.
Peter Gregg
Became one of the sport's early legends. Dominant IMSA GT champion of the 1970s.
Pipo Derani
Established himself among the era's top prototype aces. 2023 IMSA GTP champion.
Ricky Taylor
Ranks among the winningest active US sports-car racers. 2017 IMSA Prototype champion.
Scott Pruett
Retired as one of American sports-car racing's icons. 5x Rolex 24 At Daytona overall winner (tied all-time record).
Scott Sharp
Enjoyed one of the longest careers in US road racing. Sports-car and open-wheel champion.
Tommy Milner
Remains a leading American GT driver. 2x Le Mans GTE class winner (2011, 2023).
Wayne Taylor
Became one of the most successful owners in the paddock. IMSA sports-car champion as a driver.
IMSA Trivia Questions
Scott Pruett shares the all-time record for overall Rolex 24 At Daytona victories with which other legend?
Answer: Hurley Haywood
Pruett and Hurley Haywood are tied as the only drivers with five overall Rolex 24 At Daytona wins.
How many overall Rolex 24 At Daytona victories does Scott Pruett hold?
Answer: Five
Pruett won the Rolex 24 outright five times, in 1994, 2007, 2008, 2011 and 2013.
IMSA's new top prototype class that debuted at the 2023 Rolex 24 At Daytona is called what?
Answer: GTP
The Grand Touring Prototype (GTP) class debuted in January 2023 at the Rolex 24 At Daytona.
Which four manufacturers fielded GTP prototypes in IMSA's inaugural 2023 GTP season?
Answer: Cadillac, Porsche, Acura, BMW
Acura, BMW, Cadillac and Porsche all entered LMDh-based GTP cars for the 2023 season.
Which manufacturer joined the IMSA GTP class in 2024, a year after the class launched?
Answer: Lamborghini
Lamborghini joined the GTP grid in 2024 with its LMDh prototype, after the class debuted with four makers in 2023.
Who won the first-ever IMSA GTP Drivers' Championship in 2023?
Answer: Pipo Derani & Alexander Sims
Pipo Derani and Alexander Sims won the 2023 GTP title in the No. 31 Action Express Cadillac V-Series.R.
In the inaugural GTP season, which manufacturer won the 2023 Manufacturers' Championship?
Answer: Cadillac
Cadillac swept the 2023 GTP season, taking the Drivers', Team and Manufacturer championships.
Which team won overall at both the 2024 and 2025 Rolex 24 At Daytona?
Answer: Porsche Penske Motorsport
Porsche Penske Motorsport's No. 7 Porsche 963 won the Rolex 24 overall in back-to-back years, 2024 and 2025.
Porsche's 2025 Rolex 24 win extended its record for most overall Daytona 24-hour victories to how many?
Answer: 20
The 2025 victory gave Porsche a record-extending 20th overall win in the Daytona 24-hour race.
After the 2025 Rolex 24, which driver became the first to win the Daytona, Le Mans, Spa and Nurburgring 24-hour races overall?
Answer: Nick Tandy
Nick Tandy's 2025 Daytona win made him the first driver to win all four of the major 24-hour races overall.
The modern IMSA SportsCar Championship was formed in 2014 by merging Grand-Am with which series?
Answer: American Le Mans Series
Grand-Am's Rolex Sports Car Series and the American Le Mans Series merged, racing under one banner from 2014.
The 2012-announced Grand-Am/ALMS merger first raced as a unified series at which 2014 event?
Answer: Rolex 24 At Daytona
The merged series debuted at the 52nd Rolex 24 At Daytona in January 2014.
Who served as chairman of the merged IMSA organization formed from Grand-Am and ALMS?
Answer: Jim France
Grand-Am founder Jim France became chairman, with ALMS founder Don Panoz as vice chairman.
Petit Le Mans, held at Road Atlanta, was founded by which racing figure?
Answer: Don Panoz
Road Atlanta owner Don Panoz founded Petit Le Mans, first run in October 1998.
Petit Le Mans runs until which limit is reached first?
Answer: 10 hours or 1,000 miles
Petit Le Mans is contested over 10 hours or 1,000 miles, whichever comes first.
The 12 Hours of Sebring is North America's oldest sports car endurance race, first held in which year?
Answer: 1952
The first 12 Hours of Sebring was held on March 15, 1952.
Sebring International Raceway was built on the site of what former facility?
Answer: A WWII army airfield
Sebring's bumpy circuit sits on the former Hendricks Army Airfield, a WWII B-17 training base.
The IMSA Michelin Endurance Cup is a separate championship contested over which subset of races?
Answer: Only the season's longest endurance races
The Michelin Endurance Cup awards points at IMSA's marquee endurance races such as Daytona, Sebring, Watkins Glen and Petit Le Mans.
Which two-time Formula 1 world champion won the 2019 Rolex 24 At Daytona with Wayne Taylor Racing?
Answer: Fernando Alonso
Fernando Alonso won the 2019 Rolex 24 in a Wayne Taylor Racing Cadillac DPi alongside Jordan Taylor, van der Zande and Kobayashi.
Alonso became only the third F1 champion to win the Rolex 24, joining Mario Andretti and which other driver?
Answer: Phil Hill
Phil Hill (1964) and Mario Andretti (1972) were the only prior F1 champions to win the Rolex 24 before Alonso in 2019.
Hurley Haywood, tied for the most Rolex 24 wins, is most associated with which manufacturer?
Answer: Porsche
Haywood is Porsche's revered endurance ambassador, taking most of his major wins in Porsches.
How many times did Hurley Haywood win the 24 Hours of Le Mans overall?
Answer: Three
Haywood won Le Mans overall three times: 1977, 1983 and 1994.
IMSA's GTP cars are built to which shared prototype ruleset also used in the WEC Hypercar class?
Answer: LMDh
GTP cars are LMDh prototypes, a formula shared with the WEC's Hypercar class.
LMDh cars must use a chassis from one of how many approved constructors?
Answer: Four
LMDh chassis come from four approved constructors: Dallara, Ligier, Multimatic and Oreca.
Every LMDh car uses a common spec hybrid system, with the electric motor supplied by which company?
Answer: Bosch
LMDh cars share a spec hybrid: Bosch motor-generator, Xtrac gearbox and Williams battery.
Which manufacturer's GTP engine is a naturally aspirated V8, unlike its turbocharged rivals?
Answer: Cadillac
Cadillac's V-Series.R uses a naturally aspirated V8, while Porsche, BMW and Acura chose turbocharged engines.
Which pairing won the 2024 IMSA GTP Drivers' Championship?
Answer: Dane Cameron & Felipe Nasr
Dane Cameron and Felipe Nasr won the 2024 GTP title in the No. 7 Porsche Penske 963.
The IMSA LMP2 class is a spec formula powered by which standardized engine?
Answer: A Gibson V8
LMP2 cars run a spec 4.2-liter Gibson GK428 V8 producing roughly 500 horsepower.
Which chassis dominates the IMSA LMP2 grid?
Answer: Oreca 07
The Oreca 07 is the overwhelmingly dominant chassis in IMSA's LMP2 class.
What is the main difference between IMSA's GTD Pro and GTD classes?
Answer: GTD Pro allows all-professional driver lineups
Both use identical FIA GT3 cars; GTD Pro permits all-pro lineups while GTD requires at least one Silver- or Bronze-rated amateur.
IMSA's GTD and GTD Pro classes use cars built to which international standard?
Answer: FIA GT3
GTD and GTD Pro both use production-based cars built to the global FIA GT3 specification.
What is the purpose of IMSA's Balance of Performance (BoP)?
Answer: To equalize performance between different car models
BoP adjusts parameters like weight, power and aero so different car models can compete on more even terms.
Which car did Corvette Racing introduce at the 2024 Rolex 24 to replace the C8.R in GTD Pro?
Answer: Corvette Z06 GT3.R
The Corvette Z06 GT3.R, a customer GT3 car, debuted at the 2024 Rolex 24, replacing the C8.R.
The Rolex 24 is run on Daytona's road course, which combines the infield with the oval banking for a lap of roughly what length?
Answer: 3.56 miles
Daytona's sports car road course measures 3.56 miles, using most of the tri-oval banking plus an infield section.
The famous 'Corkscrew' is a plunging turn complex at which IMSA circuit?
Answer: WeatherTech Raceway Laguna Seca
Laguna Seca's Corkscrew (Turns 8/8A) drops about 59 feet, roughly a 5.5-story fall, over a short stretch of track.
What does the acronym IMSA stand for?
Answer: International Motor Sports Association
IMSA, the International Motor Sports Association, has sanctioned sports car racing in North America since its founding in 1969.
Along with the trophy, what famous prize do winning drivers at the Rolex 24 At Daytona receive?
Answer: A Rolex Daytona watch
Since Rolex became title sponsor in 1992, each winning driver has received a coveted Rolex Cosmograph Daytona wristwatch.
IMSA is headquartered in which Florida city?
Answer: Daytona Beach
IMSA is based in Daytona Beach, Florida, alongside its sister organization NASCAR.
The Sahlen's Six Hours of The Glen endurance race is held at which New York road course?
Answer: Watkins Glen International
Watkins Glen International in upstate New York hosts the Six Hours of The Glen, a round of the IMSA Michelin Endurance Cup.
The American Le Mans Series (ALMS) was founded on the technical rules of which famous race?
Answer: The 24 Hours of Le Mans
Launched in 1999, the ALMS ran under an agreement with France's ACO, using the same class structure and rules as the 24 Hours of Le Mans.
Which former SCCA executive founded IMSA in 1969?
Answer: John Bishop
John Bishop, with his wife Peggy and financial backing from NASCAR's Bill France Sr., founded IMSA in 1969.
Through the 1970s and 1980s, IMSA's premier championship carried the name of which sponsor?
Answer: Camel
R.J. Reynolds' Camel brand backed the series from 1972, making 'Camel GT' the familiar name of IMSA's golden-era championship.
Before becoming a 24-hour race in 1966, Daytona's sports car classic began in 1962 as a race of what length?
Answer: 3 hours
Dan Gurney won the inaugural 1962 Daytona Continental, a 3-hour race, famously coasting his dead Lotus 19 across the line.
Which four-time NASCAR Cup champion co-drove the winning Wayne Taylor Racing Cadillac at the 2017 Rolex 24 At Daytona?
Answer: Jeff Gordon
Jeff Gordon shared the winning No. 10 Konica Minolta Cadillac DPi-V.R with Ricky Taylor, Jordan Taylor and Max Angelelli in 2017.
For the 2025 season, Wayne Taylor Racing left Acura to run GTP cars from which manufacturer?
Answer: Cadillac
WTR returned to Cadillac for 2025 with two V-Series.R entries, a move driven partly by the chance to race at Le Mans.
When WeatherTech became title sponsor of the IMSA SportsCar Championship in 2016, which brand did it replace?
Answer: TUDOR
The merged series ran as the TUDOR United SportsCar Championship in 2014-15 before WeatherTech took over title sponsorship in 2016.
When Michelin became the official tire of the IMSA WeatherTech Championship in 2019, which brand did it replace?
Answer: Continental
Continental had been IMSA's spec tire supplier through 2018, with Michelin taking over across all classes in 2019.
What was the name of the purpose-built, cost-capped prototype class Grand-Am introduced in 2003?
Answer: Daytona Prototype
Grand-Am's Daytona Prototypes, introduced in 2003, emphasized low costs and close racing and ran until the DP era ended in 2016.
Geoff Brabham won four consecutive IMSA GTP drivers' titles from 1988 to 1991 driving for which manufacturer?
Answer: Nissan
Brabham's four straight GTP crowns came in Nissan's GTP ZX-Turbo and NPT-90 prototypes at the height of the factory GTP wars.
Which driver holds the all-time record for overall IMSA race victories with 49 wins?
Answer: Al Holbert
Al Holbert scored 49 overall IMSA wins and five championships (1976, 1977, 1983, 1985, 1986) before his death in 1988.
1984 IMSA GTP champion Randy Lanier was later sentenced to life in prison for what?
Answer: Marijuana smuggling
Lanier, champion with his own Blue Thunder Racing team, was convicted in 1988 of running a massive marijuana smuggling operation and served 26 years.
Juan Manuel Fangio II won back-to-back IMSA GTP titles in 1992 and 1993 driving which car?
Answer: Eagle MkIII-Toyota
Dan Gurney's All American Racers built the dominant Toyota-powered Eagle MkIII, which Fangio II drove to consecutive GTP championships.
Brian Redman won the first championship of IMSA's GTP era in 1981 driving which ground-effect prototype?
Answer: Lola T600
Redman's Chevrolet-powered Lola T600 took five wins in 1981, ending Porsche's run at the top of IMSA and pioneering ground-effect GTP design.
Which Porsche model won the 24 Hours of Daytona overall six years in a row from 1978 to 1983?
Answer: Porsche 935
Variants of the turbocharged Porsche 935 won Daytona every year from 1978 through 1983, the last coming with Preston Henn's Swap Shop team.
In 2016, rookie sensation Pipo Derani won both the Rolex 24 and the 12 Hours of Sebring driving a Ligier for which team?
Answer: Tequila Patrón ESM
Derani's Tequila Patrón ESM crew was the first team since 1998 to sweep both Florida endurance classics in the same season.
Acura's ARX-06 GTP car is built on an LMDh chassis from which of the four approved constructors?
Answer: ORECA
Acura was the first LMDh manufacturer to choose ORECA as chassis partner, while Cadillac and BMW use Dallara and Porsche uses Multimatic.
What is the name of the famously bumpy final corner at Sebring International Raceway?
Answer: Sunset Bend
Turn 17, known as Sunset Bend because drivers head into the setting sun late in the 12-hour race, is a wide, brutally bumpy right-hander onto the front straight.
