The 2021 Ally 400 was a NASCAR Cup Series race held on June 20, 2021, at Nashville Superspeedway in Lebanon, Tennessee. Contested over 300 laps on the superspeedway, it was the 17th race of the 2021 NASCAR Cup Series season.
Nashville Superspeedway is a motor racing complex located in Gladeville, Tennessee (though the track has a Lebanon address), United States, about 30 miles (48 km) southeast of Nashville. The track was built in 2001 and is currently used for events, driving schools and GT Academy, a reality television competition.
It is a concrete oval track 1 miles (2.145 km) long. Nashville Superspeedway is owned by Dover Motorsports, Inc., which also owns Dover International Speedway. Nashville Superspeedway was the longest concrete oval in NASCAR during the time it was on the NASCAR Xfinity Series and NASCAR Camping World Truck Series circuits. Current permanent seating capacity is approximately 25,000. Additional portable seats are brought in for some events, and seating capacity can be expanded to 150,000. Infrastructure is in place to expand the facility to include a short track, drag strip, and road course.
On June 3, NASCAR confirmed the track would reopen to host a Cup race in 2021, replacing one of the two Dover dates.
Hendrick Motorsport teammates William Byron & Kyle Larson were the fastest in the practice session with a time of 29.724 seconds and a speed of .
Aric Almirola scored the pole for the race with a time of 29.557 seconds and a speed of .
Stage One Laps: 90
Stage Two Laps: 95
Stage Three Laps: 115
NBC Sports covered the race on the television side. Rick Allen, Jeff Burton, Steve Letarte and Dale Earnhardt Jr. called the race from the broadcast booth. Parker Kligerman, Marty Snider and Kelli Stavast handled the pit road duties from pit lane. Rutledge Wood handled the features from the track.
Radio coverage of the race was broadcast by Motor Racing Network (MRN) and simulcast on Sirius XM NASCAR Radio.
The race was attended by many social media influencers including John P. Clark lll