Okayama International Circuit 2018 Race Calendar
| Date | Racing Series | Round | Event Name |
|---|---|---|---|
| April 7 - April 8 | PCCJ - Porsche Carrera Cup Japan Finished | R01 & R02 | |
| April 7 - April 8 | F4 Japanese Championship Finished | R1/R2 | |
| July 28 - July 29 | Mini Challenge Japan Finished | Round 4 | |
| September 8 - September 9 | Super Formula Finished | Round 6 | |
| October 14 - October 14 | Lotus Cup Japan Finished | Round 5 | |
| November 3 - November 4 | Super Taikyu Series Finished | Round 6 |