The Gateway Dirt Nationals is a famed indoor event that takes place each year in Downtown St. Louis, Missouri. The event sees full-size racecars on a 1/5-mile semi-banked dirt track. Each December, race fans set their eyes on the Dome at Americas Center. Competitors, crews, and fans from coast-to-coast rally in St. Louis to witness one of the most action-packed events that we all know as #DirtInDecember. December 3rd to 5th will be the monumental 10th year running of this indoor racing spectacle.