The 2021 Instacart 500 was a NASCAR Cup Series race held on March 14, 2021, at Phoenix Raceway in Avondale, Arizona. Contested over 312 laps on the oval, it was the fifth race of the 2021 NASCAR Cup Series season.
Phoenix Raceway, is a , low-banked tri-oval race track located in Avondale, Arizona. The motorsport track opened in 1964 and currently hosts two NASCAR race weekends annually. PIR has also hosted the IndyCar Series, CART, USAC and the Rolex Sports Car Series. The raceway is currently owned and operated by International Speedway Corporation.
Brad Keselowski was awarded the pole for the race as determined by competition-based formula.
Martin Truex Jr. won the race, driving a Toyota. It was his first Cup Series win since the race at Martinsville Speedway in June 2020. He finished 1.698 seconds ahead of Ford driver Joey Logano. It was Truex's 28th Cup Series win and his first at Phoenix.
Stage One Laps: 75
Stage Two Laps: 115
Stage Three Laps: 122
Fox Sports covered their 16th race at the Phoenix Raceway. Mike Joy, two-time Phoenix winner Jeff Gordon and Clint Bowyer called the race from the broadcast booth. Jamie Little and Regan Smith handled pit road for the television side. Larry McReynolds provided insight from the Fox Sports studio in Charlotte.
MRN covered the radio action for the race which was also simulcasted on Sirius XM NASCAR Radio. Alex Hayden and Jeff Striegle called the race when the field raced past the start/finish line. Dan Hubbard called the action from turns 1 & 2 and Kyle Rickey called the action from turns 3 & 4. Pit lane was manned by Steve Post and Dillon Welch.