Alex Bowman topped the first practice session for the NASCAR Cup Series Auto Club 400 at Auto Club Speedway.

Click to view practice speeds at NASCAR.com

Click to view speeds and best 10 consecutive averages (pdf)

PosCarDriverMakeTimeSpeedLap ## Laps-Fastest-Next
188Alex BowmanChevrolet40.125179.4392323—.——.—
242Kyle LarsonChevrolet40.517177.7031717-0.392-0.392
38Tyler Reddick #Chevrolet40.539177.6072121-0.414-0.022
41Kurt BuschChevrolet40.592177.3752323-0.467-0.053
521Matt DiBenedettoFord40.768176.609324-0.643-0.176
648Jimmie JohnsonChevrolet40.791176.510120-0.666-0.023
719Martin Truex JrToyota40.791176.5102020-0.6660.000
847Ricky Stenhouse JrChevrolet40.805176.449222-0.680-0.014
912Ryan BlaneyFord40.882176.117328-0.757-0.077
102Brad KeselowskiFord40.901176.035121-0.776-0.019
113Austin DillonChevrolet40.944175.850323-0.819-0.043
1211Denny HamlinToyota40.955175.803327-0.830-0.011
1322Joey LoganoFord40.999175.614223-0.874-0.044
146Ross ChastainFord41.028175.4901919-0.903-0.029
1513Ty DillonChevrolet41.074175.293114-0.949-0.046
1643Bubba WallaceChevrolet41.114175.123319-0.989-0.040
1737Ryan PreeceChevrolet41.125175.076218-1.000-0.011
1824William ByronChevrolet41.145174.991327-1.020-0.020
194Kevin HarvickFord41.146174.987221-1.021-0.001
2014Clint BowyerFord41.182174.834119-1.057-0.036
2110Aric AlmirolaFord41.225174.651216-1.100-0.043
2241Cole Custer #Ford41.236174.605224-1.111-0.011
2320Erik JonesToyota41.247174.558222-1.122-0.011
2418Kyle BuschToyota41.295174.355427-1.170-0.048
2534Michael McDowellFord41.311174.288223-1.186-0.016
269Chase ElliottChevrolet41.326174.224333-1.201-0.015
2738John Hunter Ford41.487173.548121-1.362-0.161
2817Chris BuescherFord41.616173.010219-1.491-0.129
2995Christopher Bell #Toyota41.715172.600222-1.590-0.099
3032Corey LaJoieFord41.719172.583218-1.594-0.004
3115Brennan Poole #Chevrolet42.359169.976324-2.234-0.640
3252JJ YeleyFord42.365169.95223-2.240-0.006
3396Daniel SuarezToyota42.690168.658115-2.565-0.325
3477Reed SorensonChevrolet42.855168.00822-2.730-0.165
3553Joey GaseFord43.205166.647214-3.080-0.350
3651Garrett SmithleyChevrolet43.319166.20948-3.194-0.114
3700Quin Houff #Chevrolet43.510165.479219-3.385-0.191
3866Timmy HillToyota45.222159.21525-5.097-1.712

Click to view best lap averages at NASCAR.com

Best 10 Consecutive Lap Averages

PosCarDriverFrom LapTo LapAvg Speed
188Alex Bowman110175.278
21Kurt Busch110174.065
341Cole Custer #110172.183
419Martin Truex Jr716171.578
54Kevin Harvick1120171.236
611Denny Hamlin1726169.729
79Chase Elliott2433167.443