Production Alliance Group 300

The Production Alliance Group 300 is a 300-mile (480 km) NASCAR Xfinity Series stock car race held at California Speedway in Fontana, California. The inaugural event occurred in 1997. The race is usually scheduled in late March as the fifth event of the schedule and as a support event for the NASCAR Cup Series' Auto Club 400. It has previously been held in October and late April or early May. Harrison Burton is the defending winner of the event, after winning it in 2020.

Past winners

 * 2008: Race postponed from Saturday night to Monday afternoon due to rain.
 * 2010: Race extended due to a green–white–checker finish.
 * 2021: Race canceled and moved to the Daytona road course due to the COVID-19 pandemic.