Virginia 500 - NASCAR banned tire changes under caution on short tracks in an effort to save money for race teams. Darrell Waltrip led 303 laps from the pole to the win.
Winston 500 – On a newly repaved surface Buddy Baker ran down Dale Earnhardt with two laps to go for the win, but was informed on his way to postrace interviews he would be replaced in the Ranier Racing car in 1981.
Music City 420 - Cale Yarborough cut a tire but could not pit under yellow to change it; as a result Richard Petty took his eighth win at the Nashville Fairgrounds. Petty and Cale were critical of NASCAR's new rule for short tracks banning tire changes under yellow.
Mason-Dixon 500 - Bobby Allison won after leading 126 laps, edging Richard Petty for his first win of the season. Allison was critical of the Ford racecars he was running, saying "We still need a Chevy for the other tracks."
Firecracker 400 – Bobby Allison edged Earnhardt and Pearson before a scary crash erupted off Turn Four as Phil Finney plowed into an earthen bank and flew twenty feet into the air before landing at the pit road entrance. The lead changed 41 times.
Summer 500 – At Pocono RacewayNeil Bonnett survived a physical last lap with Buddy Baker and Yarborough. The lead changed 50 times, but the story of the race was a bad wreck on Lap 57 as Richard Petty, holding the lead, broke a wheel entering the track's Tunnel Turn, shot into the wall, and bounced into the path of traffic; Petty suffered a broken neck and his title chances effectively ended.
Champion Spark Plug 400 - Darrell Waltrip crashed during practice and had to purchase the Joel Halpern Chevrolet to run the 400 at Michigan International Speedway; it was the second time in two seasons Waltrip had to drive another car after his primary DiGard entry was knocked out before the race; Waltrip led 67 laps but a late caution allowed Cale Yarborough to catch up and storm to the win. Following the race Waltrip stated he was "fed up" with the DiGard situation, saying "I fight the same battles every day." Richard Petty ran the entire race despite his broken neck and finished fifth.
Southern 500 – In a wild final five laps David Pearson rocketed from midpack into the lead and held off Dale Earnhardt and Benny Parsons, then with two to go all three crashed in Turn Two in oil from a backmarker's blown engine; Pearson limped to the race-deciding yellow, but Terry Labonte raced from nowhere and edged Pearson by a bumper for the win, his first career win.
American 500 - Cale Yarborough led 167 laps en route to his fifth win of the season, but the key development of the race was the 18th place for Dale Earnhardt; his point lead fell to just 44 with two races to go.
Dixie 500 – An early accident eliminated the Allison brothers and Cale Yarborough dominated to the win. Dale Earnhardt lost a lap and crowded Cale for a prolonged stretch; his point lead over Yarborough was now just 29 points.
Los Angeles Times 500 – Earnhardt lost a lap but made it up and despite taking off from a late green-flag stop with unsecured lug nuts on his tires finished fifth with Yarborough third and Benny Parsons the race winner. The race was switched from Sunday to Saturday to accommodate live CBS Sports coverage. Earnhardt's fifth allowed him to win the driving title by 19 points over Yarborough.