1985 IMSA GT Championship season Schedule Schedule

| Race | Length_ | Class_ | Circuit | Date_ |
|---|---|---|---|---|
| Nissan Monterey Triple Crown | 300km | Proto | Laguna Seca Raceway | May 5 |
| Nissan Monterey Triple Crown | 100km | GT | Laguna Seca Raceway | May 5 |
| Grand Prix of Charlotte | 300km | GT | Charlotte Motor Speedway | May 18 |
| Grand Prix of Charlotte | 500km | Proto | Charlotte Motor Speedway | May 19 |
| Coca-Cola 500 | 2 Hours | GT | Lime Rock Park | May 27 |
| Coca-Cola 500 | 2 Hours | Proto | Lime Rock Park | May 27 |
| Lumbermen`s 500k | 300km | GT | Mid-Ohio Sports Car Course | June 8 |
| Lumbermen`s 500k | 500km | Proto | Mid-Ohio Sports Car Course | June 9 |
| Camel Continental | 3 Hours | GT | Watkins Glen International | July 6 |
| Camel Continental | 3 Hours | Proto | Watkins Glen International | July 6 |