|Monster Energy NASCAR Cup Series|
|Location||Sparta, Kentucky, United States|
|Corporate sponsor||Quaker State|
|Distance||400.5 mi (644.5 km)|
|Laps||267 (Stage 1: 80|
Stage 2: 80
Stage 3: 107)
|Most wins (driver)||Brad Keselowski (3)|
|Most wins (team)||
Joe Gibbs Racing|
Team Penske (3)
|Most wins (manufacturer)||Toyota (5)|
|Length||1.5 mi (2.4 km)|
The Quaker State 400 presented by Walmart, commonly known as simply the Quaker State 400, is a 400.5-mile (644.5 km) annual Monster Energy NASCAR Cup Series race held at Kentucky Speedway in Sparta, Kentucky. The inaugural event was held on July 9, 2011 and was won by Kyle Busch. From 2012 to 2014, the race was held the week before the Coke Zero 400 at Daytona International Speedway on Independence Day weekend. From 2015 to 2017, the event moved back two weeks, preceding Daytona and New Hampshire, In 2018, the Quaker State 400 will become the 19th race of the season as the New Hampshire 301 at New Hampshire Motor Speedway will become the 20th race of the season. Martin Truex Jr., is the defending winner.
The event eventuated following a lawsuit in which Kentucky Speedway claimed NASCAR had violated federal antitrust laws in 2005. In 2008, the speedway was sold to Bruton Smith, hoping that the track could hold a race by 2011 and after four years, the former speedway owners abandoned the lawsuit.  In August 2010, NASCAR announced that the track could hold a Cup Series event in 2011.  Seven months later, Royal Dutch Shell's Quaker State brand was announced as sponsor and the 267 lap  race held on July 9, was won by Kyle Busch. The race was plagued by a massive traffic problem where many of the fans who expected to attend the race were turned away after several hours on Interstate 71. Following the problem, Kentucky Speedway announced that they bought more land for parking and began to work with the state government to improve traffic around the speedway in time for the 2012 race.    
On June 16, 2015, NASCAR announced that a new aero package would be used for the 2015 race.  The changes include a smaller rear spoiler and other adjustments that significantly reduced aerodynamic downforce.  The spoiler was decreased to 3.5 in (8.9 cm) tall.  There was also a 25 in (64 cm) wide splitter extension.  In addition, tires supplied by Goodyear provided drivers with more grip.  "We want to see more lead changes on the racetrack," NASCAR Executive Vice-President and Chief Racing Development Officer Steve O'Donnell said in a media teleconference. "We'll evaluate that and a number of different factors coming out of Kentucky, see what we can learn and implement down the road."  Originally, the package was to be used at this year's All-Star Race, but the plan was scrubbed and NASCAR opted to use the package for a points race.  "Let me be clear. This is not a test, this is a race," O'Donnell said of the rules package that will be in effect for the 18th round of the 2015 NASCAR Sprint Cup Series. "We've had an extensive testing plan with the industry over the last 18 months. We wouldn't implement this if we didn't feel confident as an industry to implement it at Kentucky." 
|Year||Date||No.||Driver||Team||Manufacturer||Race Distance||Race Time||Average Speed
|2011||July 9||18||Kyle Busch||Joe Gibbs Racing||Toyota||267||400.5 (644.542)||2:55:00||137.314||Report|
|2012||June 30||2||Brad Keselowski||Penske Racing||Dodge||267||400.5 (644.542)||2:45:02||145.607||Report|
|2013||June 30*||20||Matt Kenseth||Joe Gibbs Racing||Toyota||267||400.5 (644.542)||3:02:07||131.948||Report|
|2014||June 28||2||Brad Keselowski||Team Penske||Ford||267||400.5 (644.542)||2:51:59||139.723||Report|
|2015||July 11||18||Kyle Busch||Joe Gibbs Racing||Toyota||267||400.5 (644.542)||3:05:42||129.402||Report|
|2016||July 9||2||Brad Keselowski||Team Penske||Ford||267||400.5 (644.542)||3:06:55||128.58||Report|
|2017||July 8||78||Martin Truex Jr.||Furniture Row Racing||Toyota||274*||411 (661.44)||2:57:55||138.604||Report|
|2018||July 14||78||Martin Truex Jr.||Furniture Row Racing||Toyota||267||400.5 (644.542)||2:39:43||150.454||Report|
- 2013: Race moved back from Saturday night to Sunday afternoon because of rain.
- 2017: Race extended due to NASCAR Overtime.
|# Wins||Team||Years Won|
|3||Brad Keselowski||2012, 2014, 2016|
|2||Kyle Busch||2011, 2015|
|Martin Truex Jr.||2017, 2018|
|# Wins||Team||Years Won|
|3||Joe Gibbs Racing||2011, 2013, 2015|
|Team Penske||2012, 2014, 2016|
|2||Furniture Row Racing||2017, 2018|
|# Wins||Manufacturer||Years Won|
|5||Toyota||2011, 2013, 2015, 2017, 2018|
- 2011: This was the first Cup Series event at Kentucky Speedway, The race was won by Kyle Busch for the Joe Gibbs Racing team. David Reutimann finished second, and Jimmie Johnson clinched third, The race, the 18th in the season, began at 7:30 pm EDT and was televised live in the United States on TNT.  The conditions on the grid were dry before the race with the air temperature at 81 °F (27 °C).  Raceway Ministries pastor John Roberts began pre-race ceremonies, by giving the invocation. Next, Nick Lachey performed the national anthem, and Steve Beshear, Kentucky's Governor, gave the command for drivers to start their engines. Two drivers had to start at the end of the grid because of changes that were not approved during practice; they were Hamlin and Dave Blaney.  However, the race was largely overshadowed by major traffic issues that resulted in as many as 20,000 ticketed fans being unable to enter the track.
- 2012: The race, the 17th of the 2012 NASCAR Sprint Cup Series season began at 7:48 EDT. The race was televised live in the United States on TNT. Jimmie Johnson started on pole position. The Kentucky Army National Guard and the Boone County Sheriff's Office presented the flag. The invocation was offered by Pastor John Roberts of Raceway Ministries. Laura Bell Bundy performed the national anthem. The grand marshal was Quaker State Official Steve Reindl.
- 2013: The race was scheduled to start Saturday at 8:00 p.m., but pushed to Sunday afternoon due to rain, at 12:00 p.m. E.T., This prompted NASCAR to have a competition caution on Lap 30. The third caution of the race flew on lap 48 for a huge crash in the front straightaway, Brad Keselowski, Greg Biffle, Kurt Busch and others were involved in the incident, it started with Brad Keselowski spinning in the grass, and took out multiple cars, The red flag was displayed with Jimmie Johnson the race leader, it was lifted after 5 minutes and 3 seconds.
- 2014: The race served as the last year on TNT, before the acquisition of the $10.1 billion deal for NBC Sports, Prior to the start of the race, there was a downpour that soaked the track. This prompted NASCAR to schedule a competition caution at lap 30. Logano led the field to the restart on lap 85, before Keselowski was able to retake the lead two laps later. Another lengthy green-flag run ensued, before debris forced the third caution of the race, on lap 125. Prior to the caution, Matt Kenseth suffered a flat right-front tire, and had to pit from sixth position. Logano retook the lead during the pit cycle, while Jeff Gordon suffered a slow pit stop due to a malfunctioning air hose; he lost a total of 16 positions, dropping from 7th to 23rd. Logano and Keselowski swapped the lead positions once again, prior to the fourth caution, on lap 153, for a multi-car wreck on the backstretch involving Aric Almirola, Alex Bowman, Kasey Kahne and Jamie McMurray. Bowman locked up his brakes and tires, causing a large cloud of smoke that made it difficult for trailing cars to see what was in front of them. When the smoke cleared, Almirola swerved to his right to avoid Bowman, but in the process got into the left side of McMurray's car.
- 2015: NBC returned with the fifth running of the Quaker State 400, aired live on NBCSN, The race had a new track record of eleven caution flag periods for 49 laps, Carl Edwards went three wide underneath his teammate to take the lead with 54 laps to go. He got loose in turn 1 and Hamlin took back the lead with 53 laps to go. Kyle Larson made an unscheduled stop for a tire rub with 51 laps to go. Kyle Busch took back the lead with 50 laps to go. The left-rear tire rub on Kyle Larson's car wasn't fixed. It went flat and sent the car into the wall in turn 1.
- 2016: The race aired on NBCSN for a second year, A multi-car wreck on the backstretch brought out the seventh caution of the race on lap 94. Exiting turn 2, Brian Scott got loose, saved the car, got turned by Kyle Larson and got t-boned by Chris Buescher. A. J. Allmendinger, Buescher, Ty Dillon, Larson, Danica Patrick, Regan Smith, Scott and Cole Whitt were all collected in the melee.,  In the final 10 laps, a number of cars began pitting so to have enough fuel to make the finish. Kenseth briefly took the lead from Keselowski before he pitted with four laps to go and handed the lead back to Keselowski. Keselowski decreased his speed dramatically to conserve fuel. This allowed Carl Edwards to pull to within a car-length with one lap remaining. He blocked Edwards's advance as he re-fired his engine and drove on to score the victory. 
- 2017: Martin Truex, Jr. dominated the seventh running of the event leading 152 laps. He won both stages 1 and 2 (NASCAR's new race format that saw stage lengths of 80 laps, 80 laps, and the final 107) and had a 15-second lead with two laps to go until the caution came out setting up an overtime finish for the first time in the event's history. Truex Jr. stayed out while everyone else pitted, but he chose the preferred outside lane for the restart. He took off from the start passing Kyle Busch and the race ended under caution due to a crash on the frontstretch after Truex Jr. had just taken the white flag. He took the yellow and checkered-flags ahead of Kyle Larson for his third win of the season. He became just the fourth driver to win at Kentucky, and the first new winner since Matt Kenseth in 2013.
Dale Earnhardt Jr.
- "Former Kentucky Speedway owners abandon NASCAR lawsuit – ESPN". Sports.espn.go.com. December 18, 2009. Retrieved March 6, 2011.
- "Kentucky Speedway Announces 2011 Sprint Cup Race – Sports News Story – WLWT Cincinnati". Wlwt.com. August 10, 2010. Archived from the original on July 18, 2011. Retrieved March 6, 2011.
- "News". Kentucky Speedway. Archived from the original on July 13, 2011. Retrieved March 6, 2011.
- Jensen, Tom. What now, Kentucky? Archived May 12, 2012, at the Wayback Machine. Speed, July 10, 2011.
- Hembree, Mike. Kentucky Speedway To Add Parking Area Archived May 12, 2012, at the Wayback Machine. Speed, July 10, 2011.
- Kentucky Speedway apologizes to fans Archived May 12, 2012, at the Wayback Machine. Speedway Motorsports, July 11, 2011.
- Blount, Terry. Kentucky Speedway gets a mulligan. ESPN, July 12, 2011.
- Pistone, Pete (June 16, 2015). "New Rules for Kentucky". MRN.com. Motor Racing Network. Retrieved July 7, 2015.
- Hoffman, Jason (July 12, 2018). "Kentucky's NASCAR race has some pretty unique trophies". The Cincinnati Enquirer/ USA Today. Retrieved August 19, 2018.
- "Sprint Cup Series Schedule". ESPN. Retrieved July 5, 2011.
- "Race Summary". NASCAR. Retrieved July 9, 2011.
- Goheen, Kevin (July 10, 2016). "Brad Keselowski wins his third Quaker State 400 at Kentucky Speedway". The Cincinnati Enquirer. Sparta, Kentucky: Gannett Company. Retrieved July 10, 2016.
- Graves, Gary (July 10, 2016). "Keselowski wins for 3rd time at Kentucky Speedway". Associated Press. Sparta, Kentucky: AP Sports. Associated Press. Archived from the original on July 10, 2016. Retrieved July 10, 2016.
Coke Zero Sugar 400
Monster Energy NASCAR Cup Series
Quaker State 400
Foxwoods Resort Casino 301