The Xfinity Series is a professional stock car racing series in the United States, organized by NASCAR. It serves as the second tier of racing below the premier NASCAR Cup Series. The series features a mix of up-and-coming drivers and established racers, competing in various events throughout the racing season. Races in the Xfinity Series typically take place on weekends, often alongside NASCAR Cup Series events. The series showcases a variety of tracks, including ovals and road courses, and is known for its competitive nature and exciting finishes, making it a popular choice for racing fans.