Kalendaryo ng Karera Watkins Glen International 2021
| Petsa | Serye ng Karera | Biluhaba | Pangalan ng Kaganapan |
|---|---|---|---|
| 24 June - 26 June | Lamborghini Super Trofeo North America Natapos | Round 3 | |
| 24 June - 26 June | Porsche Carrera Cup North America Natapos | Round 3 | |
| 25 June - 27 June | IMSA SportsCar Championship Natapos | Round 6 | Sahlen's Six Hours of The Glen |
| 1 July - 2 July | IMSA SportsCar Championship Natapos | Round 7 | IMSA WeatherTech 240 |
| 8 September - 12 September | Porsche GT3 Cup Trophy USA Natapos | Round 6 | |
| 17 September - 19 September | PSCNA - Porsche Sprint Challenge North America Natapos | Round 7 |