NASCAR Xfinity Series 2020 6 2020-05-25 2020-05-25 https://r2.thesportsdb.com/images/media/event/thumb/x0t2231590918584.jpg https://r2.thesportsdb.com/images/media/event/poster/uebmhc1591217626.jpg The Alsco 300 is an annual 300-mile (482.803 km) NASCAR Xfinity Series race held at the Charlotte Motor Speedway in Concord, North Carolina during Memorial Day weekend as a support race for the Coca-Cola 600. The race's origins trace back to 1978, when a NASCAR race was held the day before the World 600 as a Late Model Sportsman Series race, and in 1982 it became a Busch Series race. The race just celebrated its 40th anniversary in 2018 as one of the most popular races on the NASCAR XFINITY Series schedule. 1001079