Kalender Balap Sirkuit Balap Internasional Sebring 2018
| Tanggal | Racing Series diterjemahkan menjadi Seri Balap | Putaran | Nama Acara |
|---|---|---|---|
| 1 Maret - 4 Maret | Piala Porsche GT3 AS Selesai | Round 1 | |
| 14 Maret - 17 Maret | IMSA SportsCar Championship Selesai | Round 2 | Mobil 1 Twelve Hours of Sebring |
| 9 November - 11 November | IMSA SportsCar Championship Selesai | Non-championship round |