The 1971 NASCAR Winston Cup Series season began on Sunday February 14 and ended on Sunday November 20. Richard Petty was the champion for this Winston Cup season. After 20 years of being named the NASCAR Grand National Series, R. J. Reynolds first became the primary sponsor in a decade where the growing anti-tobacco movement banned its advertisement on television and motorsports was the ideal place to place their advertisements. Through NASCAR, Winston merchandise was unveiled to live viewers of the races (since they were not allowed to advertise to a televised audience). This kind of merchandise would also be given out at stores that sold cigarettes in subsequent years. Race car drivers were encouraged to smoke cigarettes (when not racing) until the mid-2000s brought in strict drug testing policies in addition to a smoking cessation program by Nicorette, a GlaxoSmithKline brand (Goody's Headache Powders, a long-time NASCAR sponsor, is a GSK brand; as of 2011, GSK sponsors both Martinsville Speedway Sprint Cup races).
Note: Some races were combined races for Grand American and Grand National cars. Races marked Combined Races were won by Grand American cars. The driver who finished first among Grand National cars is listed.
The 1971 Motor Trend 500 was the first official race in NASCAR's Winston Cup era. Drivers had to contend with 191 laps on a 2.620 mile road course at Riverside International Raceway in Riverside, California. Ray Elder won the race.
The 12th annual Daytona 500 was run on February 14 at Daytona International Speedway in Daytona Beach, Florida. A.J. Foyt won the pole and Richard Petty would win his third Daytona 500.