- 1959
- - USRRC
  - - R01 * Pomona
  - - R02 * Daytona
  - - R03 * Meadowdale
  - - R04 * Lime Rock
  - - R05 * Meadowdale
  - - R06 * Riverside
  - - R07 * Lime Rock
  - - R08 * Meadowdale
  - - R09 * Vaca Valley
  - - R10 * Riverside
  - - R11 * Watkins Glen
- - Sonstige Events
- 1958
- - USRRC
  - - R01 * Lime Rock
  - - R02 * Marlboro
  - - R03 * Watkins Glen
  - - R04 * Riverside
- - Sonstige Events
  - - R02 * Sebring (12 h)
- 1957
- - Sonstige Events
  - - R02 * Sebring (12 h)
- 1956
- - Sonstige Events
  - - R02 * Sebring (12 h)
- 1955
- - Sonstige Events
  - - R02 * Sebring (12 h)
- 1954
- - Sonstige Events
  - - R02 * Sebring (12 h)
- 1953
- - Sonstige Events
  - - R01 * Sebring (12 h)
- 1952
- - Sonstige Events
  - - Rxx * Sebring (12 h)
- 1950
- - Sonstige Events
  - - Rxx * Sebring (6 h)