Greg Biffle ran the fastest lap in first practice with a speed of 201.189 mph at Talladega Superspeedway on Friday.
Biffle established a top time of 47.597-seconds on the fifth of 22 laps in the No. 16 Roush Fenway Ford. He was also the top car in the Best 15-Lap Consecutive Average 197.48 mph.
Danica Patrick (200.624 mph), Justin Allgaier (200.574 mph), Clint Bowyer (200.393 mph) and Kasey Kahne (200.372mph) posted the top-five speeds.
AJ Allmendinger, Trevor Bayne, Casey Mears, David Ragan and Paul Menard rounded out the top 10 quickest laps.
Allmendinger also posted the Best five-Lap Consecutive Average of 197.82 mph, followed by Biffle (198.43mph) Allgaier (198.30mph), Bayne (198.03 mph) and Tony Stewart (197.97 mph).
Allgaier had the Best 10-Lap Consecutive Average of 197.98 mph followed Biffle, Stewart, Denny Hamlin and Kyle Larson.
Forty-five drivers took part in the initial practice for the CampingWorld.com 500. Matt Kenseth’s 35 laps were the most run by any competitor.
At the 25-minute mark, some drivers worked on single-car runs — with the exception of the Team Penske Fords. Last weekend’s winner Joey Logano led the trio followed by Brad Keselowski and Ryan Blaney for eight laps.
CLICK HERE for complete session results