In 2020, NASCAR sanctioned four national series:

• 2020 NASCAR Cup Series – the top racing series in NASCAR
• 2020 NASCAR Xfinity Series – the second-highest racing series in NASCAR
• 2020 NASCAR Gander RV & Outdoors Truck Series – the third-highest racing series in NASCAR
• 2020 ARCA Menards Series – the top racing series in ARCA (owned by NASCAR)

Touring series

• eNASCAR iRacing Pro Invitational Series – The iRacing series that all-stars competed in during the COVID-19 pandemic.
• 2020 ARCA Menards Series West – One of the two regional ARCA Series
• 2020 ARCA Menards Series East – One of the two regional ARCA Series
• 2020 NASCAR Whelen Modified Tour – The modified tour of NASCAR
• 2020 NASCAR Whelen Euro Series – The top NASCAR racing series in Europe