Kalendar Perlumbaan Antarabangsa Watkins Glen 2015
| Tarikh | Siri Perlumbaan | Bulatan | Nama Acara |
|---|---|---|---|
| 26 Jun - 28 Jun | LSTNA - Lamborghini Super Trofeo Amerika Utara Selesai | Round 2 | Sahlen's Six Hours of the Glen |
| 27 Jun - 28 Jun | IMSA SportsCar Championship Selesai | Round 5 | Sahlen's Six Hours of the Glen |