1975 IMSA GT Championship
The 1975 Camel GT Challenge season was the 5th season of the IMSA GT Championship auto racing series. The series was for GTO and GTU class Grand tourer racing cars. It began February 1, 1975, and ended November 30, 1975, after seventeen rounds.
Schedule
Some events were run twice, with each running counting as one round.| Rnd | Race | Length | Circuit | Date |
| 1 | 24 Hours of Daytona | 24 Hours | Daytona International Speedway | February 1 February 2 |
| 2 | 12 Hours of Sebring | 12 Hours | Sebring International Raceway | March 21 |
| 3 | Road Atlanta 100 | Road Atlanta | April 20 | |
| 4 | Road Atlanta 100 | Road Atlanta | April 20 | |
| 5 | Monterey Triple Crown | Laguna Seca Raceway | May 4 | |
| 6 | Monterey Triple Crown | Laguna Seca Raceway | May 4 | |
| 7 | Six Hours of Riverside | 6 Hours | Riverside International Raceway | May 10 |
| 8 | Schaefer 350 | Lime Rock Park | May 26 | |
| 9 | Schaefer 350 | Lime Rock Park | May 26 | |
| 10 | Mid-Ohio 100 | Mid-Ohio Sports Car Course | June 1 | |
| 11 | Mosport 100 | Mosport Park | June 14 | |
| 12 | Paul Revere 250 | Daytona International Speedway | July 4 | |
| 13 | Mid-America 100 | Mid-America Raceway | July 20 | |
| 14 | Mid-America 100 | Mid-America Raceway | July 20 | |
| 15 | Talladega 1 Hour | 1 Hour | Talladega Superspeedway | August 9 |
| 16 | Mid-Ohio 6 Hours | 6 Hours | Mid-Ohio Sports Car Course | August 24 |
| 17 | Championship Finals | Daytona International Speedway | November 30 |