2018 Roseanne 300

The 2018 Roseanne 300 was the 5th stock car race of the 2018 NASCAR Xfinity Series season, and the 20th iteration of the event.

The race was held on Saturday, March 17, 2018, in Fontana, California, at Auto Club Speedway, a 2 miles (3.2 km) permanent D-shaped oval racetrack.

[1] To fill out the podium, Justin Allgaier and Elliott Sadler, both driving for JR Motorsports would finish second and third, respectively.

Auto Club Speedway (previously California Speedway) was a two-mile (3.2 km), low-banked, D-shaped oval superspeedway in Fontana, California which hosted NASCAR racing annually from 1997 to 2023.

Since Auto Club Speedway is at least 2 miles (3.2 km), the qualifying system was a single car, single lap, two round system where in the first round, everyone would set a time to determine positions 13-40.