Kalendar Perlumbaan WeatherTech Raceway Laguna Seca 2018
| Tarikh | Siri Perlumbaan | Bulatan | Nama Acara |
|---|---|---|---|
| 4 Ogos - 5 Ogos | Kelab Pemilik Porsche - Siri Perlumbaan Piala Selesai | Round 7 | |
| 7 September - 9 September | IMSA SportsCar Championship Selesai | Round 10 | Continental Tire Monterey Grand Prix powered by Mazda |
| 8 September - 9 September | LSTNA - Lamborghini Super Trofeo Amerika Utara Selesai | Round 5 | |
| 26 Oktober - 28 Oktober | Cabaran GT Antara Benua Selesai | Round 4 | Californa 8 Hours |