Watkins Glen International 2021 Race Calendar
| Date | Racing Series | Round | Event Name |
|---|---|---|---|
| June 24 - June 26 | Lamborghini Super Trofeo North America Finished | Round 3 | |
| June 24 - June 26 | Porsche Carrera Cup North America Finished | Round 3 | |
| June 25 - June 27 | IMSA SportsCar Championship Finished | Round 6 | Sahlen's Six Hours of The Glen |
| July 1 - July 2 | IMSA SportsCar Championship Finished | Round 7 | IMSA WeatherTech 240 |
| September 8 - September 12 | Porsche GT3 Cup Trophy USA Finished | Round 6 | |
| September 17 - September 19 | PSCNA - Porsche Sprint Challenge North America Finished | Round 7 |