Kalender Balap Sirkuit Balap WeatherTech Laguna Seca 2018
| Tanggal | Racing Series diterjemahkan menjadi Seri Balap | Putaran | Nama Acara |
|---|---|---|---|
| 4 Agustus - 5 Agustus | Klub Pemilik Porsche - Seri Balap 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 | Lamborghini Super Trofeo Amerika Utara Selesai | Round 5 | |
| 26 Oktober - 28 Oktober | Tantangan GT Interkontinental Selesai | Round 4 | Californa 8 Hours |