The 2020 Season Finale 500 was a NASCAR Cup Series race held on November 8, 2020 at Phoenix Raceway in Avondale, Arizona. Contested over 312 laps on the one mile (1.6 km) oval, it was the 36th and final race of the 2020 NASCAR Cup Series season. Chase Elliott won the race, claiming his first Cup Series championship.

The Season Finale 500 was the final full-time start for seven-time champion Jimmie Johnson, and for 2012 Cup runner-up Clint Bowyer, and 2003 Winston Cup champion Matt Kenseth as full-time Cup Series drivers.

Phoenix Raceway – also known as PIR – is a one-mile, low-banked tri-oval race track located in Avondale, Arizona. It is named after the nearby metropolitan area of Phoenix. 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.

The raceway was originally constructed with a 2.5 mi (4.0 km) road course that ran both inside and outside of the main tri-oval. In 1991 the track was reconfigured with the current 1.51 mi (2.43 km) interior layout. PIR has an estimated grandstand seating capacity of around 67,000. Lights were installed around the track in 2004 following the addition of a second annual NASCAR race weekend.

Phoenix Raceway is home to two annual NASCAR race weekends, one of 13 facilities on the NASCAR schedule to host more than one race weekend a year. The track is both the first and last stop in the western United States, as well as the fourth and the last track on the schedule.

This was the first time the championship race was held in Phoenix.

Joey Logano was the first of the four drivers to clinch a spot in the Championship 4, winning the first race of the Round of 8 at Kansas.

Chase Elliott clinched the second spot in the Championship 4, winning the final race of the Round of 8 at Martinsville.