NASCAR Xfinity Series at Auto Club Speedway
NASCAR Xfinity Series race

Stock car races in the then-NASCAR Xfinity Series were held at Auto Club Speedway in Fontana, California from 1997 to 2023. The race was held as a 150 lap, 300 mile (480 km) race.
A second race at the track was also held during the fall as support to the Cup fall race from 2004 until the track lost its second Cup date after 2010.
No races have been held since 2023, as the track is currently undergoing demolition of the 2-mile oval.
Past winners
Notes
2008 I: Race postponed from Saturday night to Monday afternoon due to rain.
2009 II, 2010 I and 2022: Race extended due to NASCAR overtime.
2021: Race canceled and moved to the Daytona road course due to the COVID-19 pandemic.
2023: Race postponed from Saturday afternoon to Sunday night due to rain.
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This entry incorporates text from “NASCAR Xfinity Series at Auto Club Speedway” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.