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)