Kalendaryo ng Karera Sonoma Raceway 2018
| Petsa | Serye ng Karera | Biluhaba | Pangalan ng Kaganapan |
|---|---|---|---|
| 7 Hulyo - 8 Hulyo | Porsche Owners Club - Cup Racing Series Natapos | Round 6 |
| Petsa | Serye ng Karera | Biluhaba | Pangalan ng Kaganapan |
|---|---|---|---|
| 7 Hulyo - 8 Hulyo | Porsche Owners Club - Cup Racing Series Natapos | Round 6 |