Auto Club 400

The Auto Club 400 is a Monster Energy NASCAR Cup Series race held annually at Auto Club Speedway in Fontana, California, It is held as the fifth race of the NASCAR season, held in conjunction with the NASCAR Xfinity Series the previous day, From 1997-2010, the race distance was 500 miles in distance, For the 2011 season onward, the race distance reduced to 400 miles in length.