Road America 2018 Race Calendar
| Date | Racing Series | Round | Event Name |
|---|---|---|---|
| May 17 - May 20 | Porsche GT3 Cup Trophy USA Finished | Round 3 | |
| August 3 - August 5 | IMSA SportsCar Championship Finished | Round 8 | Continental Tire Road Race Showcase |
| August 4 - August 5 | LSTNA - Lamborghini Super Trofeo North America Finished | Round 3 |