Schedule
| Rnd | Race | Circuit | Date |
|---|---|---|---|
| 1 | Paul Ricard 2 Hours 30 Minutes | Circuit Paul Ricard | April 13 |
| 2 | Brno 2 Hours 30 Minutes | Autodrom Brno Masaryk | May 17 |
| 3 | Giesse ISRS Trophy (2 Hours 30 Minutes) | Misano Circuit | July 4 |
| 4 | RAC Tourist Trophy (2 Hours 30 Minutes) | Donington Park | July 19 |
| 5 | Anderstorp 2 Hours 30 Minutes | Scandinavian Raceway | August 16 |
| 6 | DMC/ADAC Sportwagen Festival (2 Hours 30 Minutes) | Nürburgring | September 6 |
| 7 | Le Mans Autumn Cup (2 Hours 30 Minutes) | Bugatti Circuit | September 19 |
| 8 | Vodacom ISRS (2 Hours 30 Minutes) | Kyalami | December 6 |
Read more about this topic: 1998 International Sports Racing Series Season