| Official Race Results | ||||||||
| KC Masterpiece 400| \Kansas Speedway | ||||||||
| May 12, 2018|Race 12 of 36 | ||||||||
| Average Speed: 128.395 M.P.H. | ||||||||
| Time of Race: 2 Hrs., 53 Mins., 38 Secs. | ||||||||
| Lead Changes: 13 among 7 drivers | ||||||||
| Cautions: 6 for 31 laps + 1 Red Flag | ||||||||
| Fin | St | Car | Driver | Make | Sponsor | Pts / Bonus | Laps | Status |
| 1 | 1 | 4 | Kevin Harvick | Ford | Busch Light | 58 | 267 | Running |
| 2 | 7 | 78 | Martin Truex Jr | Toyota | 5-hour ENERGY/Bass Pro Shops | 36 | 267 | Running |
| 3 | 9 | 22 | Joey Logano | Ford | AAA Insurance | 47 | 267 | Running |
| 4 | 22 | 42 | Kyle Larson | Chevrolet | Clover/First Data | 49 | 267 | Running |
| 5 | 6 | 11 | Denny Hamlin | Toyota | FedEx Freight | 36 | 267 | Running |
| 6 | 11 | 21 | Paul Menard | Ford | Menards/Atlas | 31 | 267 | Running |
| 7 | 12 | 20 | Erik Jones | Toyota | Reser's | 32 | 267 | Running |
| 8 | 8 | 41 | Kurt Busch | Ford | Haas Automation | 35 | 267 | Running |
| 9 | 4 | 10 | Aric Almirola | Ford | Smithfield Prime | 38 | 267 | Running |
| 10 | 3 | 18 | Kyle Busch | Toyota | M&M's Caramel | 37 | 267 | Running |
| 11 | 16 | 17 | Ricky Stenhouse Jr | Ford | SunnyD | 26 | 267 | Running |
| 12 | 17 | 9 | Chase Elliott | Chevrolet | NAPA Auto Parts | 25 | 267 | Running |
| 13 | 20 | 38 | David Ragan | Ford | MDS Trucking | 24 | 267 | Running |
| 14 | 5 | 2 | Brad Keselowski | Ford | Alliance Truck Parts | 31 | 267 | Running |
| 15 | 33 | 14 | Clint Bowyer | Ford | Haas 30 Years of… | 26 | 267 | Running |
| 16 | 18 | 47 | AJ Allmendinger | Chevrolet | Kroger ClickList | 21 | 266 | Running |
| 17 | 25 | 3 | Austin Dillon | Chevrolet | Symbicort | 20 | 266 | Running |
| 18 | 19 | 88 | Alex Bowman | Chevrolet | Axalta | 19 | 266 | Running |
| 19 | 23 | 48 | Jimmie Johnson | Chevrolet | Lowe's for Pros | 18 | 265 | Running |
| 20 | 36 | 34 | Michael McDowell | Ford | Love's Travel Stops | 17 | 265 | Running |
| 21 | 34 | 95 | Kasey Kahne | Chevrolet | Tommy Williams Drywall | 16 | 264 | Running |
| 22 | 37 | 32 | Matt DiBenedetto | Ford | Can-Am/Wholey | 15 | 263 | Running |
| 23 | 21 | 43 | Darrell Wallace Jr | Chevrolet | World Wide Technology | 14 | 262 | Running |
| 24 | 27 | 72 | Corey LaJoie | Chevrolet | Schluter-Systems | 13 | 262 | Running |
| 25 | 31 | 0 | Landon Cassill | Chevrolet | VNH Electric | 12 | 260 | Running |
| 26 | 28 | 15 | Ross Chastain | Chevrolet | LowT Center | 11 | 259 | Running |
| 27 | 30 | 55 | Reed Sorenson | Chevrolet | Harrah's North Kansas City | 10 | 259 | Running |
| 28 | 14 | 19 | Daniel Suarez | Toyota | STANLEY | 9 | 258 | Running |
| 29 | 29 | 23 | Gray Gaulding | Toyota | BK Racing | 8 | 257 | Running |
| 30 | 15 | 31 | Ryan Newman | Chevrolet | Bass Pro Shops/Cabela's | 7 | 253 | Accident |
| 31 | 24 | 1 | Jamie McMurray | Chevrolet | Cessna | 6 | 253 | Accident |
| 32 | 38 | 66 | Timmy Hill | Toyota | CrashClaimsR.us | 5 | 253 | Running |
| 33 | 13 | 24 | William Byron | Chevrolet | Liberty University | 4 | 252 | Accident |
| 34 | 10 | 37 | Chris Buescher | Chevrolet | Breyers 2 in 1 | 3 | 252 | Accident |
| 35 | 32 | 51 | BJ McLeod | Chevrolet | PREFUND CAPITAL | 2 | 251 | Running |
| 36 | 35 | 6 | Matt Kenseth | Ford | Wyndham Rewards | 1 | 250 | Accident |
| 37 | 2 | 12 | Ryan Blaney | Ford | REV Group | 19 | 247 | Accident |
| 38 | 26 | 13 | Ty Dillon | Chevrolet | Twisted Tea | 1 | 247 | Accident |