| 4.2.1968 | 24 h Daytona | 4 | | Moore / Murphy | HRH Corp. | DNF |
| 4.2.1968 | 24 h Daytona | 6 | | Donohue / Johnson / Fisher | Roger Penske Racing Ent. | 12th |
| 4.2.1968 | 24 h Daytona | 16 | | Craig Fisher | Roger Penske Racing Ent. | DNA |
| 4.2.1968 | 24 h Daytona | 68 | | Boye / Yuma | Bill Boye | 16th |
| 4.2.1968 | 24 h Daytona | 71 | | Chitwood / Barton / Hoffman | Joie Chitwood Thrill Show | 17th |
| 4.2.1968 | 24 h Daytona | 75 | | Mastandrea / Noseda | Mastandrea/Mar Shipping | DNA |
| 25.2.1968 | SCCA National West Palm Beach | | | Norberto Mastandrea | | ?th |
| 23.3.1968 | 12 h Sebring | 12 | | Jowett, Jr. / Cardwell | Wilton T. Jowett, Sr. | DNF |
| 23.3.1968 | 12 h Sebring | 14 | | Mastandrea / Noseda | Mar Shipping | DNF |
| 23.3.1968 | 12 h Sebring | 15 | | Donohue / Fisher | Roger Penske Racing | 3rd |
| 23.3.1968 | 12 h Sebring | 16 | | Fisher / Welch / Johnson | Roger Penske Racing | 4th |
| 23.3.1968 | 12 h Sebring | 17 | | Chitwood / Horchler / Hoffman | Joie Chitwood, Jr. | NC |
| 23.3.1968 | 12 h Sebring | 18 | | Corwin / Pipin | James Corwin | NC |
| 23.3.1968 | 12 h Sebring | 19 | | Murphy / Moore | H.R.H. Corporation | 21st |
| 23.3.1968 | 12 h Sebring | 20 | | McClain / Boo | Padrick Chevrolet | NC |
| 23.3.1968 | 12 h Sebring | 21 | | Yuma / Boye | Bill Boyé Racing | DNF |
| 23.3.1968 | 12 h Sebring | 81 | | Unser / Ruby | Samadco Ltd. (Smokey Yunick) | DNF |
| 6.4.1968 | SCCA Regional Cotati [AP+BP+AS] | 11 | | John Silva | | DNA |
| 6.4.1968 | SCCA Regional Cotati [AP+BP+AS] | 28 | | Dick Stanton | | DNA |
| 6.4.1968 | SCCA Regional Cotati [AP+BP+AS] | 88 | | Jerry Oliver | | DNA |
| 14.4.1968 | SCCA Regional Newport | 68 | | Everett Hatch | | 6th |
| 21.4.1968 | SCCA National Virginia [AP+BP+CP+AS+BS] | 92 | | Wilton Jowett | | DNF |
| 28.4.1968 | SCCA Regional Riverside [ASR+BSR+AP+AS] | 7 | | Tom Lynch | | DNA |
| 28.4.1968 | SCCA Regional Riverside [ASR+BSR+AP+AS] | 64 | | Tony Settember | | DNA |
| 28.4.1968 | SCCA Regional Riverside [ASR+BSR+AP+AS] | 90 | | Sam Coniglio | | DNA |
| 4.5.1968 | SCCA Regional Newport | 68 | | Joel Park | | DNA |
| 5.5.1968 | SCCA National Newport | 68 | | Everett Hatch | | DNA |
| 12.5.1968 | Trans-Am War Bonnet Park | 6 | | Mark Donohue | Penske-Hilton Racing | 1st |
| 12.5.1968 | Trans-Am War Bonnet Park | | | Larry Wilcox | | DNF |
| 12.5.1968 | Trans-Am War Bonnet Park | | | Wilton Jowett | | DNF |
| 19.5.1968 | SCCA Regional Meadowdale [ASR+BSR+AP+BP+AS] | 85 | | Dick Lang | | 2nd |
| 26.5.1968 | SCCA Regional Blackhawk Farms | | | Dick Lang | | 2nd |
| 30.5.1968 | Trans-Am Lime Rock | 6 | | Mark Donohue | Penske-Hilton Racing | 1st |
| 30.5.1968 | Trans-Am Lime Rock | 24 | | Jim Murphy | | 10th |
| 30.5.1968 | Trans-Am Lime Rock | 77? | | Craig Fisher | | DNF |
| 30.5.1968 | Trans-Am Lime Rock | | | Floyd Aaskov | | 8th |
| 30.5.1968 | Trans-Am Lime Rock | | | Wilton Jowett | | DQ |
| 2.6.1968 | SCCA National Willow Springs [AP+BP+AS] | 7 | | Tom Lynch | Thomas Lynch | DNA |
| 2.6.1968 | SCCA National Willow Springs [AP+BP+AS] | 37 | | Andy Porterfield | Carl Byrd & Stan Allen | raced |
| 2.6.1968 | SCCA National Willow Springs [AP+BP+AS] | 64 | | Tony Settember | Washburn Chevrolet | raced |
| 9.6.1968 | SCCA Regional Cotati [AP+BP+CP+DP+AS] | 11 | | John Silva | | DNA |
| 9.6.1968 | SCCA Regional Cotati [AP+BP+CP+DP+AS] | 99 | | Charles Blake | | DNA |
| 15.6.1968 | SCCA National Road America [AP+BP+CP+DP+AS] | 21 | | Dick Roe | Dick Roe | DNA |
| 16.6.1968 | Trans-Am Mid-Ohio | 6 | | Mark Donohue | Penske-Hilton Racing | 1st |
| 16.6.1968 | Trans-Am Mid-Ohio | 16 | | Bob Johnson | | 4th |
| 16.6.1968 | Trans-Am Mid-Ohio | | | Richard Hoffman | | 10th |
| 16.6.1968 | Trans-Am Mid-Ohio | | | Wilton Jowett | | 6th |
| 16.6.1968 | Trans-Am Mid-Ohio | | | Dick Lang | | DNF |
| 16.6.1968 | Trans-Am Mid-Ohio | | | Floyd Aaskov | | 8th |
| 16.6.1968 | Trans-Am Mid-Ohio | | | Jim Corwin | | DNF |
| 23.6.1968 | Trans-Am Bridgehampton | 6 | | Mark Donohue | Penske-Hilton Racing | 1st |
| 23.6.1968 | Trans-Am Bridgehampton | 16 | | Sam Posey | Penske-Hilton Racing | 3rd |
| 23.6.1968 | Trans-Am Bridgehampton | | | Wilton Jowett | | 4th |
| 23.6.1968 | Trans-Am Bridgehampton | | | Dean Alles | | DNF |
| 30.6.1968 | SCCA Regional Kent | 18 | | | | raced |
| 30.6.1968 | SCCA Regional Kent | 88 | | | | raced |
| 4.7.1968 | 6 h Riverside | 10 | | Coniglio / Guldstrand | Sam Coniglio | DNA |
| 6.7.1968 | SCCA Regional Cotati [ASR+BSR+AP+BP+CP+DP+AS+BS] | 11 | | John Silva | John Silva Jr. | 2nd |
| 7.7.1968 | Trans-Am Meadowdale | 6 | | Mark Donohue | Penske-Hilton Racing | 1st |
| 7.7.1968 | SCCA National Riverside [AP+BP+AS] | 7 | | Tom Lynch | Tom Lynch | DNA |
| 7.7.1968 | Trans-Am Meadowdale | 77? | | Craig Fisher | | 4th |
| 7.7.1968 | Trans-Am Meadowdale | | | Ralph Webb | | DNF |
| 7.7.1968 | Trans-Am Meadowdale | | | Richard Hoffman | | 9th |
| 7.7.1968 | Trans-Am Meadowdale | | | Sam Posey | Penske-Hilton Racing | 3rd |
| 7.7.1968 | Trans-Am Meadowdale | | | Wilton Jowett | | DNF |
| 7.7.1968 | Trans-Am Meadowdale | | | Jim Corwin | | 13th |
| 21.7.1968 | Trans-Am St. Jovite | 6 | | Mark Donohue | Penske-Hilton Racing | 1st |
| 21.7.1968 | Solituderennen Hockenheim [GT+TS] | 66 | | Peter Reinhardt | Autohaus Rolf Götz | 2nd |
| 21.7.1968 | Trans-Am St. Jovite | 77? | | Craig Fisher | | 4th |
| 21.7.1968 | Trans-Am St. Jovite | | | Wilton Jowett | | 6th |
| 21.7.1968 | Trans-Am St. Jovite | | | Floyd Aaskov | | DNF |
| 21.7.1968 | Trans-Am St. Jovite | | | Sam Posey | Penske-Hilton Racing | 3rd |
| 21.7.1968 | Trans-Am St. Jovite | | | Jim Corwin | | 12th |
| 21.7.1968 | SCCA National Mid-Ohio | | | Dick Lang | | DNF |
| 21.7.1968 | Trans-Am St. Jovite | | | Hoffman / Horchler | | DNF |
| 27.7.1968 | SCCA Regional Lake Garnett [ASR+BSR+AP+BP+CP+AS+BS] | 90 | | Chris Dyer | | DNA |
| 28.7.1968 | Edmonton [Main] | 1 | | Bob Stevens | SCCBC | DNF |
| 28.7.1968 | SCCA National Lake Garnett [ASR+BSR+AP+BP+AS] | 90 | | Chris Dyer | | DNA |
| 3.8.1968 | SCCA Regional Daytona [ASR+BSR+AP+BP+CP+DP] | 91 | | Norberto Mastandrea | | DNS |
| 4.8.1968 | Trans-Am Bryar | 6 | | Mark Donohue | Penske-Hilton Racing | 1st |
| 4.8.1968 | SCCA National Riverside [AP+BP+AS] | 10 | | Dick Guldstrand | Sam Coniglio | raced |
| 4.8.1968 | SCCA National Riverside [AP+BP+AS] | 28 | | Dick Stanton | | raced |
| 4.8.1968 | SCCA National Riverside [AP+BP+AS] | 78 | | Bob McGinty | | raced |
| 4.8.1968 | SCCA National Riverside [AP+BP+AS] | 88 | | Jerry Oliver | Parker Robb Chev. | raced |
| 4.8.1968 | Paul Whiteman Trophy Daytona | 91 | | Norberto Mastandrea | | 4th |
| 4.8.1968 | SCCA National Daytona [ASR+BSR+CSR+AP+BP+CP+DP+EP+AS+BS] | 91 | | Norberto Mastandrea | | 31st |
| 4.8.1968 | Trans-Am Bryar | | | Jowett / Posey | | 6th |
| 4.8.1968 | Trans-Am Bryar | | | Skip Barber | | 7th |
| 10.8.1968 | SCCA Regional Cotati [ASR+BSR+AP+BP+CP+AS] | 11 | | John Silva | John Silva Jr. | DNA |
| 10.8.1968 | SCCA Regional Cotati [ASR+BSR+AP+BP+CP+AS] | 99 | | Charles Blake | Charles Blake Ent. | DNA |
| 11.8.1968 | Trans-Am Watkins Glen | 6 | | Mark Donohue | Penske-Hilton Racing | 3rd |
| 11.8.1968 | Trans-Am Watkins Glen | | | Sam Posey | | 2nd |
| 11.8.1968 | Trans-Am Watkins Glen | | | Barg / Stevens | | 12th |
| 11.8.1968 | Trans-Am Watkins Glen | | | Wilton Jowett | | DNF |
| 11.8.1968 | Trans-Am Watkins Glen | | | Jim Murphy | | DNF |
| 11.8.1968 | Trans-Am Watkins Glen | | | Hoffman / Horchler | | DNF |
| 24.8.1968 | SCCA Regional Kent [ASR+BSR+AP+BP+AS] | 11 | | Jack Westlund | | 12th |
| 24.8.1968 | SCCA Regional Kent [ASR+BSR+AP+BP+AS] | 28 | | Charles Blake | | 14th |
| 24.8.1968 | SCCA Regional Kent [ASR+BSR+AP+BP+AS] | 68 | | Joel Park | | 8th |
| 25.8.1968 | SCCA National Kent [ASR+BSR+AP+BP+AS] | 68 | | Everett Hatch | | 12th |