Harvick’s average lap speed of 190.501 mph topped the first 50-minute session at Michigan. Kyle Busch (190.019 mph) was second and William Byron (189.999 mph) third. Erik Jones and Joey Logano completed the top-five.

Rounding out the top-10 average lap speeds were Clint Bowyer, Jimmie Johnson, Kurt Busch, Paul Menard and Denny Hamlin.

Harvick also had the fastest average lap speed (189.414 mph) among all the drivers who ran at least 10 consecutive laps. Jones, Busch, Daniel Suarez and Alex Bowman rounded out the top-five in that category.

There were no incidents in the session.

Brad Keselowski, who won the pole for Sunday’s race, ended up 18th-fastest and ran a session-high 51 laps.

Cla#DriverManufacturerLapsTimeGapIntervalMph
14United States Kevin Harvick Ford3837.795  190.501
218United States Kyle Busch Toyota3637.8910.0960.096190.019
324United States William Byron Chevrolet2937.8950.1000.004189.999
420United States Erik Jones Toyota4137.9180.1230.023189.883
522United States Joey Logano Ford3437.9220.1270.004189.863
614United States Clint Bowyer Ford2437.9300.1350.008189.823
748United States Jimmie Johnson Chevrolet3037.9800.1850.050189.573
81United States Kurt Busch Chevrolet3638.0180.2230.038189.384
921United States Paul Menard Ford2638.0280.2330.010189.334
1011United States Denny Hamlin Toyota4438.0480.2530.020189.235
1141Mexico Daniel Suarez Ford4338.0590.2640.011189.180
1219United States Martin Truex Jr. Toyota2338.0710.2760.012189.120
1337United States Chris Buescher Chevrolet3438.0810.2860.010189.071
143United States Austin Dillon Chevrolet3238.0870.2920.006189.041
1547United States Ryan Preece Chevrolet3238.0900.2950.003189.026
1642United States Kyle Larson Chevrolet4438.0910.2960.001189.021
1788United States Alex Bowman Chevrolet3538.1080.3130.017188.937
182United States Brad Keselowski Ford5138.1270.3320.019188.843
1913United States Ty Dillon Chevrolet4438.1680.3730.041188.640
2012United States Ryan Blaney Ford3038.1880.3930.020188.541
216United States Ryan Newman Ford2138.2050.4100.017188.457
229United States Chase Elliott Chevrolet3338.2080.4130.003188.442
238United States Daniel Hemric Chevrolet3738.2080.4130.000188.442
2410United States Aric Almirola Ford3638.2150.4200.007188.408
2543United States Darrell Wallace Jr. Chevrolet3838.2350.4400.020188.309
2636United States Matt Tifft Ford2438.2880.4930.053188.048
2795United States Matt DiBenedetto Toyota4338.3380.5430.050187.803
2838United States David Ragan Ford3438.3400.5450.002187.793
2934United States Michael McDowell Ford2838.3420.5470.002187.784
3017United States Ricky Stenhouse Jr. Ford2338.3440.5490.002187.774
3115United States Ross Chastain Chevrolet538.4940.6990.150187.042
3232United States Corey Lajoie Ford3138.7260.9310.232185.922
3300United States Landon Cassill Chevrolet3338.7650.9700.039185.735
3452United States Austin Theriault Ford1939.2561.4610.491183.411
3527United States Quin Houff Chevrolet1239.6021.8070.346181.809
3677United States Garrett Smithley Chevrolet839.7811.9860.179180.991
3751United States Cody Ware Ford1140.1542.3590.373179.310
3853United States Spencer Boyd Ford1540.4232.6280.269178.116