1985 IMSA GT Championship season Schedule Schedule

| Race | Length_ | Class_ | Circuit | Date_ |
|---|---|---|---|---|
| SunBank 24 at Daytona | 24 Hours | All | Daytona International Speedway | February 2 February 3 |
| Löwenbräu Grand Prix of Miami | 3 Hours | Proto | Streets of Miami | February 24 |
| Löwenbräu Grand Prix of Miami | 45 Minutes | GTO | Streets of Miami | February 24 |
| Löwenbräu Grand Prix of Miami | 45 Minutes | GTU | Streets of Miami | February 24 |
| Coca-Cola Classic 12 Hours of Sebring | 12 Hours | All | Sebring International Raceway | March 23 |
| Atlanta Journal-Constitution Grand Prix | 500km | All | Road Atlanta | April 14 |
| Los Angeles Times / Nissan Grand Prix | 600km | All | Riverside International Raceway | April 28 |