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The following NASCAR national series were held in 2012:

• 2012 NASCAR Sprint Cup Series  – The top racing series in American NASCAR
• 2012 NASCAR Nationwide Series  – The second-highest racing series in American NASCAR
• 2012 NASCAR Camping World Truck Series  – The third-highest racing series in American NASCAR
• 2012 NASCAR Canadian Tire Series season  – The top racing series in Canadian NASCAR
• 2012 NASCAR Toyota Series season  – The top racing series in Mexican NASCAR
• 2012 NASCAR Stock V6 Series  – The second-highest racing series in Mexican NASCAR