<P> While NASCAR is known for primarily running counter-clockwise on oval tracks, Sonoma Raceway and Watkins Glen International are complex road courses which are raced clockwise . The series' first road course event was held in 1954, at Linden Airport in New Jersey . Since 1963, the series has raced on at least one road course every year . </P> <P> Courses have a wide range of banking in the corners . New Hampshire Motor Speedway, with 7 degrees of banking, has the flattest corners, while the steepest banking is Talladega Superspeedway's 33 degrees . Tracks also vary in amount of banking on the straightaways, from entirely flat on many courses to 9 degrees at Dover International Speedway . </P> <P> Race speeds vary widely depending on the track . The fastest track is Talladega Superspeedway, where the record average speed is 188.354 mph (303.126 km / h) and the record qualifying lap is 212.809 mph (342.483 km / h), set by Bill Elliott in 1987 . The record stands unlikely to be broken, as restrictor plates were made mandatory at superspeedways in 1988 to reduce speeds . The slowest tracks are Sonoma Raceway, a road course with a record average speed of only 83.6 mph (134.5 km / h) and a record qualifying lap of 99.3 mph (159.8 km / h), and Martinsville Speedway, a short, nearly flat "paper clip" oval, with a record average speed of 82.2 mph (132.3 km / h) and a record qualifying lap of 99.9 mph (160.8 km / h). The average speed of a race is determined by dividing the winner's race time (from the waving of the green flag to the waving of the checkered flag, including laps spent under caution) by the distance of the race . Time elapsed during red flag periods is not included in the calculation of the average speed . </P> <Ul> <Li> Most championships: 7 (tied)--Richard Petty, Dale Earnhardt, Jimmie Johnson </Li> <Li> Active driver with most championships: 7--Jimmie Johnson </Li> <Li> Most consecutive championships: 5--Jimmie Johnson (2006--2010) </Li> <Li> Fewest victories in a championship season: 1 (tied)--Benny Parsons, Bill Rexford, Ned Jarrett, Matt Kenseth </Li> <Li> Most championships by a car owner: 12--Rick Hendrick </Li> <Li> Manufacturer with most total championships: Chevrolet--39 (Ford is second with 15) </Li> <Li> Most wins for one year model car: 59 (1957--1960)--1957 Chevrolet 150 </Li> <Li> Most career wins: 200--Richard Petty </Li> <Li> Most career poles: 123--Richard Petty </Li> <Li> Most career poles in the modern era (1972--present): 81--Jeff Gordon </Li> <Li> Most active career poles: 51--Ryan Newman (2002--present) </Li> <Li> Most total career last place finishes: 33--Joe Nemechek </Li> <Li> Most career starts without a win: 653 (1963--1991)--J.D. McDuffie </Li> <Li> Most wins in a season: 27--Richard Petty (1967) </Li> <Li> Most wins in a modern era season: 13 (tied)--Richard Petty (1975), Jeff Gordon (1998) </Li> <Li> Most career starts: 1,184--Richard Petty </Li> <Li> Most consecutive starts: 797--Jeff Gordon </Li> <Li> Most career top 10's: 712--Richard Petty </Li> <Li> Most top 10's in a season: 45 (tied)--Joe Weatherly (1962), Ned Jarrett (1964, 1965) </Li> <Li> Most Top 10's in a modern era season: 30--Jeff Gordon (2007) </Li> <Li> Most career laps led: 51,406--Richard Petty </Li> <Li> Most Daytona 500 victories: 7--Richard Petty </Li> <Li> Most career laps led in the modern era: 27,243--Cale Yarborough </Li> <Li> Smallest margin of victory: 0.002 seconds (tied)--Ricky Craven (2003 Carolina Dodge Dealers 400), Jimmie Johnson (2011 Aaron's 499) </Li> <Li> Largest margin of victory by laps: 22 laps--Ned Jarrett (Spartanburg 1965) </Li> <Li> Largest margin of victory by distance: 19.25 miles (30.98 km)--Ned Jarrett (1965 Southern 500) </Li> <Li> Most consecutive seasons with at least one win: 18--Richard Petty (1960--1977) </Li> <Li> Most consecutive wins: 10--Richard Petty (1967) </Li> <Li> Most consecutive 1.5 - mile course wins: 4--Martin Truex Jr. (2016--2017) </Li> <Li> Fastest qualifying speed: 212.809 mph (1987 Winston 500)--Bill Elliott </Li> <Li> Oldest race winner: Harry Gant, 7004192120000000000 ♠ 52 years, 219 days (1992 Champion Spark Plug 400) </Li> <Li> Most lead changes in a race: 2010 Aaron's 499--88 lead changes among 29 drivers </Li> <Li> Youngest Daytona 500 winner: Trevor Bayne, 7003730600000000000 ♠ 20 years, 1 day (2011 Daytona 500) </Li> <Li> Most career Top 10's by a female driver: 7--Danica Patrick </Li> <Li> Most laps led by a female driver: 64--Danica Patrick </Li> <Li> Most career starts by a female driver: 191--Danica Patrick </Li> <Li> Most stage wins in a single season (2017--present): 20--Martin Truex Jr . </Li> <Li> Most 3 - stage sweeps wins in a season (2017--present): 2--Martin Truex Jr. (2017 Kobalt 400, 2017 Quaker State 400) </Li> <Li> Highest single - season stages win - rate (2017--present): 18.5% (20 of 108)--Martin Truex Jr . </Li> </Ul>

What is the average speed of a nascar car
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