Kalendaryo ng Karera Sonoma Raceway 2021
| Petsa | Serye ng Karera | Biluhaba | Pangalan ng Kaganapan |
|---|---|---|---|
| 30 Abril - 2 Mayo | Ferrari Challenge North America Natapos | Round 3 | |
| 10 Hulyo - 11 Hulyo | Porsche Owners Club - Cup Racing Series Natapos | Round 6 |
| Petsa | Serye ng Karera | Biluhaba | Pangalan ng Kaganapan |
|---|---|---|---|
| 30 Abril - 2 Mayo | Ferrari Challenge North America Natapos | Round 3 | |
| 10 Hulyo - 11 Hulyo | Porsche Owners Club - Cup Racing Series Natapos | Round 6 |