1978 IMSA GT Championship season Schedule Schedule

| Race | Length_ | Class_ | Circuit | Date_ |
|---|---|---|---|---|
| 24 Hours of Daytona | 24 Hours | All | Daytona International Speedway | February 4 February 5 |
| 12 Hours of Sebring | 12 Hours | All | Sebring International Raceway | March 18 |
| 6 Hours of Talladega | 6 Hours | All | Talladega Superspeedway | April 2 |
| Camel GT Challenge | mi (km) | GTU | Road Atlanta | April 16 |
| Camel GT Challenge | mi (km) | GTX/GTO | Road Atlanta | April 16 |
| Monterey Triple Crown | mi (km) | GTX/GTO | Laguna Seca Raceway | April 30 |
| Monterey Triple Crown | 45 Minutes | GTU | Laguna Seca Raceway | April 30 |
| Hallett Grand Prix | 1 Hour | GTU | Hallett Motor Racing Circuit | May 7 |