[d10nis]

Auto Club 500 practice

Practice 1 coverage

It's all over Jimmie Johnson is fast off the truck here in Fontana, Calif., setting a lap of 181.892 mph to pace the first practice session of the weekend. Teammate Jeff Gordon, Greg Biffle, David Reutimann and Ryan Newman completed the top five in the session.

50 minutes into the practice and Jimmie Johnson remains the leader of the pack.

Practice resumes. There are 58-minutes remaining on the session.

There's a brief stoppage in practice at the 22-minute mark as there was oil down on the track.

20 minutes into the session and Jimmie Johnson has set the mark to beat, running a fast lap of 181,571 mph. The rest of the field has yet to break the 180 mph barrier so far.

The NASCAR Sprint Cup teams have driven onto pit road and this 90-minute practice session is underway.

Welcome to FOXSports.com's coverage of practice for this Sunday's Auto Club 500 at Auto Club Speedway in Fontana, Calif. Practice is set to get underway at the 2-mile speedway beginning at 3 pm ET.