Kalendar Perlumbaan Antarabangsa Watkins Glen 2018
| Tarikh | Siri Perlumbaan | Bulatan | Nama Acara |
|---|---|---|---|
| 28 Jun - 29 Jun | LSTNA - Lamborghini Super Trofeo Amerika Utara Selesai | Round 2 | |
| 28 Jun - 1 Julai | IMSA SportsCar Championship Selesai | Round 5 | Sahlen's Six Hours of The Glen |
| 27 Julai - 29 Julai | Ferrari Challenge North America Selesai | Round 5 | |
| 6 September - 9 September | Piala Porsche GT3 Piala Amerika Syarikat Selesai | Round 5 |